87785563052856 has 64 divisors (see below), whose sum is σ = 234203262382080. Its totient is φ = 27323713912320.

The previous prime is 87785563052849. The next prime is 87785563052879. The reversal of 87785563052856 is 65825036558778.

It is a hoax number, since the sum of its digits (75) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 847037530 + ... + 847141161.

It is an arithmetic number, because the mean of its divisors is an integer number (3659425974720).

Almost surely, 2^{87785563052856} is an apocalyptic number.

It is an amenable number.

87785563052856 is an abundant number, since it is smaller than the sum of its proper divisors (146417699329224).

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

87785563052856 is a wasteful number, since it uses less digits than its factorization.

87785563052856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1694178844 (or 1694178840 counting only the distinct ones).

The product of its (nonzero) digits is 3386880000, while the sum is 75.

The spelling of 87785563052856 in words is "eighty-seven trillion, seven hundred eighty-five billion, five hundred sixty-three million, fifty-two thousand, eight hundred fifty-six".