90910100200 has 48 divisors (see below), whose sum is σ = 213740923500. Its totient is φ = 35955448320.

The previous prime is 90910100191. The next prime is 90910100209. The reversal of 90910100200 is 200101909.

It is an interprime number because it is at equal distance from previous prime (90910100191) and next prime (90910100209).

It can be written as a sum of positive squares in 6 ways, for example, as 3768240996 + 87141859204 = 61386^2 + 295198^2 .

It is not an unprimeable number, because it can be changed into a prime (90910100209) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2535855 + ... + 2571454.

Almost surely, 2^90910100200 is an apocalyptic number.

It is an amenable number.

90910100200 is an abundant number, since it is smaller than the sum of its proper divisors (122830823300).

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

90910100200 is a wasteful number, since it uses less digits than its factorization.

90910100200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5107414 (or 5107405 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 22.

The spelling of 90910100200 in words is "ninety billion, nine hundred ten million, one hundred thousand, two hundred".