22154520667631 has 16 divisors (see below), whose sum is σ = 25354107302400. Its totient is φ = 19172087272800.

The previous prime is 22154520667603. The next prime is 22154520667663. The reversal of 22154520667631 is 13676602545122.

It is not a de Polignac number, because 22154520667631 - 2²⁶ = 22154453558767 is a prime.

It is a super-2 number, since 2×22154520667631² (a number of 27 digits) contains 22 as substring.

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 22154520667631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22154520667231) 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, 489061211 + ... + 489106508.

It is an arithmetic number, because the mean of its divisors is an integer number (1584631706400).

Almost surely, 2^{22154520667631} is an apocalyptic number.

22154520667631 is a deficient number, since it is larger than the sum of its proper divisors (3199586634769).

22154520667631 is a wasteful number, since it uses less digits than its factorization.

22154520667631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 978167830.

The product of its (nonzero) digits is 3628800, while the sum is 50.

The spelling of 22154520667631 in words is "twenty-two trillion, one hundred fifty-four billion, five hundred twenty million, six hundred sixty-seven thousand, six hundred thirty-one".