90100582261 has 4 divisors (see below), whose sum is σ = 90108282400. Its totient is φ = 90092882124.

The previous prime is 90100582249. The next prime is 90100582279. The reversal of 90100582261 is 16228500109.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90100582261 is a prime.

It is a super-2 number, since 2×90100582261² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90100582291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3832491 + ... + 3855928.

It is an arithmetic number, because the mean of its divisors is an integer number (22527070600).

Almost surely, 2^90100582261 is an apocalyptic number.

It is an amenable number.

90100582261 is a deficient number, since it is larger than the sum of its proper divisors (7700139).

90100582261 is a wasteful number, since it uses less digits than its factorization.

90100582261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7700138.

The product of its (nonzero) digits is 8640, while the sum is 34.

The spelling of 90100582261 in words is "ninety billion, one hundred million, five hundred eighty-two thousand, two hundred sixty-one".