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139961987119680 = 2635111929372772347
BaseRepresentation
bin11111110100101101110000…
…100001100011101001000000
3200100120020100112022010211220
4133310231300201203221000
5121321114122200312210
61213401352123035040
741323630342113105
oct3764556041435100
9610506315263756
10139961987119680
11406615aaa22680
12138456a236ba80
1360134882458cb
14267c2a69c4aac
15112aaec1c0c70
hex7f4b70863a40

139961987119680 has 1792 divisors, whose sum is σ = 544344631603200. Its totient is φ = 30075308605440.

The previous prime is 139961987119673. The next prime is 139961987119681. The reversal of 139961987119680 is 86911789169931.

It is a junction number, because it is equal to n+sod(n) for n = 139961987119596 and 139961987119605.

It is not an unprimeable number, because it can be changed into a prime (139961987119681) by changing a digit.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 59634420267 + ... + 59634422613.

Almost surely, 2139961987119680 is an apocalyptic number.

139961987119680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139961987119680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (272172315801600).

139961987119680 is an abundant number, since it is smaller than the sum of its proper divisors (404382644483520).

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

139961987119680 is a wasteful number, since it uses less digits than its factorization.

139961987119680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2740 (or 2730 counting only the distinct ones).

The product of its (nonzero) digits is 317447424, while the sum is 78.

The spelling of 139961987119680 in words is "one hundred thirty-nine trillion, nine hundred sixty-one billion, nine hundred eighty-seven million, one hundred nineteen thousand, six hundred eighty".