91190401312 has 24 divisors (see below), whose sum is σ = 180944741376. Its totient is φ = 45236181312.

The previous prime is 91190401307. The next prime is 91190401331. The reversal of 91190401312 is 21310409119.

It is a super-2 number, since 2×91190401312² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11215228 + ... + 11223355.

It is an arithmetic number, because the mean of its divisors is an integer number (7539364224).

Almost surely, 2^91190401312 is an apocalyptic number.

It is an amenable number.

91190401312 is a deficient number, since it is larger than the sum of its proper divisors (89754340064).

91190401312 is a wasteful number, since it uses less digits than its factorization.

91190401312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22438720 (or 22438712 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 31.

The spelling of 91190401312 in words is "ninety-one billion, one hundred ninety million, four hundred one thousand, three hundred twelve".