91010000101 has 4 divisors (see below), whose sum is σ = 91071370432. Its totient is φ = 90948629772.

The previous prime is 91010000093. The next prime is 91010000111. The reversal of 91010000101 is 10100001019.

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 not a de Polignac number, because 91010000101 - 2³ = 91010000093 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 (91010000111) 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, 30682941 + ... + 30685906.

It is an arithmetic number, because the mean of its divisors is an integer number (22767842608).

Almost surely, 2^91010000101 is an apocalyptic number.

It is an amenable number.

91010000101 is a deficient number, since it is larger than the sum of its proper divisors (61370331).

91010000101 is a wasteful number, since it uses less digits than its factorization.

91010000101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61370330.

The product of its (nonzero) digits is 9, while the sum is 13.

It can be divided in two parts, 9 and 1010000101, that multiplied together give a palindrome (9090000909).

The spelling of 91010000101 in words is "ninety-one billion, ten million, one hundred one", and thus it is an aban number.