385178807556 has 36 divisors (see below), whose sum is σ = 973717945200. Its totient is φ = 128383505328.

The previous prime is 385178807549. The next prime is 385178807633. The reversal of 385178807556 is 655708871583.

385178807556 is a `hidden beast` number, since 3 + 8 + 5 + 1 + 78 + 8 + 0 + 7 + 556 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 385178807493 and 385178807502.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 112915 + ... + 884933.

It is an arithmetic number, because the mean of its divisors is an integer number (27047720700).

Almost surely, 2^385178807556 is an apocalyptic number.

385178807556 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

385178807556 is an abundant number, since it is smaller than the sum of its proper divisors (588539137644).

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

385178807556 is a wasteful number, since it uses less digits than its factorization.

385178807556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785888 (or 785883 counting only the distinct ones).

The product of its (nonzero) digits is 56448000, while the sum is 63.

The spelling of 385178807556 in words is "three hundred eighty-five billion, one hundred seventy-eight million, eight hundred seven thousand, five hundred fifty-six".