90919100101 has 4 divisors (see below), whose sum is σ = 90922305600. Its totient is φ = 90915894604.

The previous prime is 90919100071. The next prime is 90919100113. The reversal of 90919100101 is 10100191909.

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, and also an emirpimes, since its reverse is a distinct semiprime: 10100191909 = 1009 ⋅10010101.

It is a cyclic number.

It is not a de Polignac number, because 90919100101 - 2²⁵ = 90885545669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90919100161) 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, 1559821 + ... + 1617058.

It is an arithmetic number, because the mean of its divisors is an integer number (22730576400).

Almost surely, 2^90919100101 is an apocalyptic number.

It is an amenable number.

90919100101 is a deficient number, since it is larger than the sum of its proper divisors (3205499).

90919100101 is a wasteful number, since it uses less digits than its factorization.

90919100101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3205498.

The product of its (nonzero) digits is 729, while the sum is 31.

The spelling of 90919100101 in words is "ninety billion, nine hundred nineteen million, one hundred thousand, one hundred one".