90130019952 has 40 divisors (see below), whose sum is σ = 266098155136. Its totient is φ = 25751434176.

The previous prime is 90130019951. The next prime is 90130019981. The reversal of 90130019952 is 25991003109.

It is a self number, because there is not a number n which added to its sum of digits gives 90130019952.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90130019951) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134121718 + ... + 134122389.

Almost surely, 2^90130019952 is an apocalyptic number.

It is an amenable number.

90130019952 is an abundant number, since it is smaller than the sum of its proper divisors (175968135184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90130019952 is a wasteful number, since it uses less digits than its factorization.

90130019952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268244125 (or 268244119 counting only the distinct ones).

The product of its (nonzero) digits is 21870, while the sum is 39.

The spelling of 90130019952 in words is "ninety billion, one hundred thirty million, nineteen thousand, nine hundred fifty-two".