90920200091 has 16 divisors (see below), whose sum is σ = 109411848960. Its totient is φ = 73806876000.

The previous prime is 90920200061. The next prime is 90920200127. The reversal of 90920200091 is 19000202909.

It is a cyclic number.

It is not a de Polignac number, because 90920200091 - 2¹⁴ = 90920183707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90920200061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 327245 + ... + 537521.

It is an arithmetic number, because the mean of its divisors is an integer number (6838240560).

Almost surely, 2^90920200091 is an apocalyptic number.

90920200091 is a deficient number, since it is larger than the sum of its proper divisors (18491648869).

90920200091 is a wasteful number, since it uses less digits than its factorization.

90920200091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213554.

The product of its (nonzero) digits is 2916, while the sum is 32.

The spelling of 90920200091 in words is "ninety billion, nine hundred twenty million, two hundred thousand, ninety-one".