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65878093242 = 232133141359617
BaseRepresentation
bin111101010110101000…
…111110110110111010
320022001011020212210100
4331112220332312322
52034404242440432
650133004100230
74521343360533
oct752650766672
9208034225710
1065878093242
1125a36514565
1210926534676
13629b4b2180
14328d40b68a
151aa880a07c
hexf56a3edba

65878093242 has 192 divisors, whose sum is σ = 163261163520. Its totient is φ = 19053619200.

The previous prime is 65878093217. The next prime is 65878093277. The reversal of 65878093242 is 24239087856.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 106771318 + ... + 106771934.

It is an arithmetic number, because the mean of its divisors is an integer number (850318560).

Almost surely, 265878093242 is an apocalyptic number.

65878093242 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 65878093242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81630581760).

65878093242 is an abundant number, since it is smaller than the sum of its proper divisors (97383070278).

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

65878093242 is a wasteful number, since it uses less digits than its factorization.

65878093242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1069 (or 1066 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 54.

The spelling of 65878093242 in words is "sixty-five billion, eight hundred seventy-eight million, ninety-three thousand, two hundred forty-two".