864736504056 has 64 divisors (see below), whose sum is σ = 2402133350400. Its totient is φ = 288235000800.

The previous prime is 864736504003. The next prime is 864736504069. The reversal of 864736504056 is 650405637468.

864736504056 is a `hidden beast` number, since 8 + 64 + 73 + 6 + 504 + 0 + 5 + 6 = 666.

It is a super-2 number, since 2×864736504056² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 864736503993 and 864736504011.

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, 7866351 + ... + 7975521.

It is an arithmetic number, because the mean of its divisors is an integer number (37533333600).

Almost surely, 2^864736504056 is an apocalyptic number.

It is an amenable number.

864736504056 is an abundant number, since it is smaller than the sum of its proper divisors (1537396846344).

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

864736504056 is a wasteful number, since it uses less digits than its factorization.

864736504056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145857 (or 145847 counting only the distinct ones).

The product of its (nonzero) digits is 14515200, while the sum is 54.

The spelling of 864736504056 in words is "eight hundred sixty-four billion, seven hundred thirty-six million, five hundred four thousand, fifty-six".