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142844915448510 = 23511379108741659
BaseRepresentation
bin100000011110101010101100…
…011100010111101010111110
3200201202211200202120022202220
4200132222230130113222332
5122210332341323323020
61223450014230230210
742042130111433502
oct4036525434275276
9621684622508686
10142844915448510
11415732088a2000
12140303751b5366
1361922aa46a5b2
14273ba33442302
15117aacda97240
hex81eaac717abe

142844915448510 has 256 divisors, whose sum is σ = 382218515251200. Its totient is φ = 34158453563520.

The previous prime is 142844915448437. The next prime is 142844915448511. The reversal of 142844915448510 is 15844519448241.

It is a super-2 number, since 2×1428449154485102 (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142844915448511) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3428888061 + ... + 3428929719.

It is an arithmetic number, because the mean of its divisors is an integer number (1493041075200).

Almost surely, 2142844915448510 is an apocalyptic number.

142844915448510 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 142844915448510, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191109257625600).

142844915448510 is an abundant number, since it is smaller than the sum of its proper divisors (239373599802690).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142844915448510 is a wasteful number, since it uses less digits than its factorization.

142844915448510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42868 (or 42846 counting only the distinct ones).

The product of its (nonzero) digits is 29491200, while the sum is 60.

The spelling of 142844915448510 in words is "one hundred forty-two trillion, eight hundred forty-four billion, nine hundred fifteen million, four hundred forty-eight thousand, five hundred ten".