90124429631 has 2 divisors, whose sum is σ = 90124429632. Its totient is φ = 90124429630.

The previous prime is 90124429597. The next prime is 90124429639. The reversal of 90124429631 is 13692442109.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90124429631 - 2⁶ = 90124429567 is a prime.

It is a super-2 number, since 2×90124429631² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90124429639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45062214815 + 45062214816.

It is an arithmetic number, because the mean of its divisors is an integer number (45062214816).

Almost surely, 2^90124429631 is an apocalyptic number.

90124429631 is a deficient number, since it is larger than the sum of its proper divisors (1).

90124429631 is an equidigital number, since it uses as much as digits as its factorization.

90124429631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 41.

The spelling of 90124429631 in words is "ninety billion, one hundred twenty-four million, four hundred twenty-nine thousand, six hundred thirty-one".