22661500254631 has 16 divisors (see below), whose sum is σ = 27422445404160. Its totient is φ = 18281462578560.

The previous prime is 22661500254607. The next prime is 22661500254671. The reversal of 22661500254631 is 13645200516622.

It is not a de Polignac number, because 22661500254631 - 2¹⁹ = 22661499730343 is a prime.

It is a super-2 number, since 2×22661500254631² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22661500254671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49785690 + ... + 50238808.

It is an arithmetic number, because the mean of its divisors is an integer number (1713902837760).

Almost surely, 2^{22661500254631} is an apocalyptic number.

22661500254631 is a deficient number, since it is larger than the sum of its proper divisors (4760945149529).

22661500254631 is a wasteful number, since it uses less digits than its factorization.

22661500254631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 873414.

The product of its (nonzero) digits is 518400, while the sum is 43.

The spelling of 22661500254631 in words is "twenty-two trillion, six hundred sixty-one billion, five hundred million, two hundred fifty-four thousand, six hundred thirty-one".