20411255631 has 64 divisors (see below), whose sum is σ = 31700680704. Its totient is φ = 11578723200.

The previous prime is 20411255587. The next prime is 20411255633. The reversal of 20411255631 is 13655211402.

It is not a de Polignac number, because 20411255631 - 2⁹ = 20411255119 is a prime.

It is a super-2 number, since 2×20411255631² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20411255633) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7311846 + ... + 7314636.

It is an arithmetic number, because the mean of its divisors is an integer number (495323136).

Almost surely, 2^20411255631 is an apocalyptic number.

20411255631 is a deficient number, since it is larger than the sum of its proper divisors (11289425073).

20411255631 is a wasteful number, since it uses less digits than its factorization.

20411255631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3124.

The product of its (nonzero) digits is 7200, while the sum is 30.

The spelling of 20411255631 in words is "twenty billion, four hundred eleven million, two hundred fifty-five thousand, six hundred thirty-one".