90910910102 has 4 divisors (see below), whose sum is σ = 136366365156. Its totient is φ = 45455455050.

The previous prime is 90910910059. The next prime is 90910910143. The reversal of 90910910102 is 20101901909.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22727727524 + ... + 22727727527.

It is an arithmetic number, because the mean of its divisors is an integer number (34091591289).

Almost surely, 2^90910910102 is an apocalyptic number.

90910910102 is a deficient number, since it is larger than the sum of its proper divisors (45455455054).

90910910102 is a wasteful number, since it uses less digits than its factorization.

90910910102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45455455053.

The product of its (nonzero) digits is 1458, while the sum is 32.

The spelling of 90910910102 in words is "ninety billion, nine hundred ten million, nine hundred ten thousand, one hundred two".