22631477621 has 2 divisors, whose sum is σ = 22631477622. Its totient is φ = 22631477620.

The previous prime is 22631477573. The next prime is 22631477629. The reversal of 22631477621 is 12677413622.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22575062500 + 56415121 = 150250^2 + 7511^2 .

It is a cyclic number.

It is not a de Polignac number, because 22631477621 - 2¹⁰ = 22631476597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22631477629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11315738810 + 11315738811.

It is an arithmetic number, because the mean of its divisors is an integer number (11315738811).

Almost surely, 2^22631477621 is an apocalyptic number.

It is an amenable number.

22631477621 is a deficient number, since it is larger than the sum of its proper divisors (1).

22631477621 is an equidigital number, since it uses as much as digits as its factorization.

22631477621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 169344, while the sum is 41.

The spelling of 22631477621 in words is "twenty-two billion, six hundred thirty-one million, four hundred seventy-seven thousand, six hundred twenty-one".