90126957629 has 4 divisors (see below), whose sum is σ = 90647922876. Its totient is φ = 89605992384.

The previous prime is 90126957623. The next prime is 90126957647. The reversal of 90126957629 is 92675962109.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 92675962109 = 107 ⋅866130487.

It can be written as a sum of positive squares in 2 ways, for example, as 52222761529 + 37904196100 = 228523^2 + 194690^2 .

It is a cyclic number.

It is not a de Polignac number, because 90126957629 - 2⁸ = 90126957373 is a prime.

It is a super-2 number, since 2×90126957629² (a number of 23 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 (90126957623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260482364 + ... + 260482709.

It is an arithmetic number, because the mean of its divisors is an integer number (22661980719).

Almost surely, 2^90126957629 is an apocalyptic number.

It is an amenable number.

90126957629 is a deficient number, since it is larger than the sum of its proper divisors (520965247).

90126957629 is a wasteful number, since it uses less digits than its factorization.

90126957629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520965246.

The product of its (nonzero) digits is 3674160, while the sum is 56.

The spelling of 90126957629 in words is "ninety billion, one hundred twenty-six million, nine hundred fifty-seven thousand, six hundred twenty-nine".