90423625502 has 16 divisors (see below), whose sum is σ = 155015789280. Its totient is φ = 38752017408.

The previous prime is 90423625489. The next prime is 90423625519. The reversal of 90423625502 is 20552632409.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1046078 + ... + 1129214.

It is an arithmetic number, because the mean of its divisors is an integer number (9688486830).

Almost surely, 2^90423625502 is an apocalyptic number.

90423625502 is a deficient number, since it is larger than the sum of its proper divisors (64592163778).

90423625502 is a wasteful number, since it uses less digits than its factorization.

90423625502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160835.

The product of its (nonzero) digits is 129600, while the sum is 38.

The spelling of 90423625502 in words is "ninety billion, four hundred twenty-three million, six hundred twenty-five thousand, five hundred two".