91509942711 has 32 divisors (see below), whose sum is σ = 134338000896. Its totient is φ = 54948348000.

The previous prime is 91509942697. The next prime is 91509942739. The reversal of 91509942711 is 11724990519.

It is not a de Polignac number, because 91509942711 - 2⁶ = 91509942647 is a prime.

It is a super-2 number, since 2×91509942711² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91509942751) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2711040 + ... + 2744586.

It is an arithmetic number, because the mean of its divisors is an integer number (4198062528).

Almost surely, 2^91509942711 is an apocalyptic number.

91509942711 is a deficient number, since it is larger than the sum of its proper divisors (42828058185).

91509942711 is a wasteful number, since it uses less digits than its factorization.

91509942711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34323.

The product of its (nonzero) digits is 204120, while the sum is 48.

The spelling of 91509942711 in words is "ninety-one billion, five hundred nine million, nine hundred forty-two thousand, seven hundred eleven".