78556010855 has 48 divisors (see below), whose sum is σ = 116995370976. Its totient is φ = 50310973440.

The previous prime is 78556010833. The next prime is 78556010857. The reversal of 78556010855 is 55801065587.

It is not a de Polignac number, because 78556010855 - 2¹² = 78556006759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78556010857) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 473627 + ... + 617603.

It is an arithmetic number, because the mean of its divisors is an integer number (2437403562).

Almost surely, 2^78556010855 is an apocalyptic number.

78556010855 is a deficient number, since it is larger than the sum of its proper divisors (38439360121).

78556010855 is a wasteful number, since it uses less digits than its factorization.

78556010855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144144 (or 144137 counting only the distinct ones).

The product of its (nonzero) digits is 1680000, while the sum is 50.

The spelling of 78556010855 in words is "seventy-eight billion, five hundred fifty-six million, ten thousand, eight hundred fifty-five".