20790627609257 has 16 divisors (see below), whose sum is σ = 22968454778880. Its totient is φ = 18660776144400.

The previous prime is 20790627609221. The next prime is 20790627609263. The reversal of 20790627609257 is 75290672609702.

It is a cyclic number.

It is not a de Polignac number, because 20790627609257 - 2³⁶ = 20721908132521 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20790627609257.

It is not an unprimeable number, because it can be changed into a prime (20790627809257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30936782 + ... + 31601672.

It is an arithmetic number, because the mean of its divisors is an integer number (1435528423680).

Almost surely, 2^{20790627609257} is an apocalyptic number.

It is an amenable number.

20790627609257 is a deficient number, since it is larger than the sum of its proper divisors (2177827169623).

20790627609257 is a wasteful number, since it uses less digits than its factorization.

20790627609257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700964.

The product of its (nonzero) digits is 40007520, while the sum is 62.

The spelling of 20790627609257 in words is "twenty trillion, seven hundred ninety billion, six hundred twenty-seven million, six hundred nine thousand, two hundred fifty-seven".