20831167654056 has 64 divisors (see below), whose sum is σ = 58010108875200. Its totient is φ = 6926232037824.

The previous prime is 20831167654001. The next prime is 20831167654117. The reversal of 20831167654056 is 65045676113802.

It is a happy number.

20831167654056 is a `hidden beast` number, since 2 + 0 + 8 + 31 + 1 + 67 + 6 + 540 + 5 + 6 = 666.

It is a super-2 number, since 2×20831167654056² (a number of 27 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 = 20831167653993 and 20831167654011.

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, 121375950 + ... + 121547453.

It is an arithmetic number, because the mean of its divisors is an integer number (906407951175).

Almost surely, 2^{20831167654056} is an apocalyptic number.

It is an amenable number.

20831167654056 is an abundant number, since it is smaller than the sum of its proper divisors (37178941221144).

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

20831167654056 is a wasteful number, since it uses less digits than its factorization.

20831167654056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242923815 (or 242923805 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 54.

The spelling of 20831167654056 in words is "twenty trillion, eight hundred thirty-one billion, one hundred sixty-seven million, six hundred fifty-four thousand, fifty-six".