91133920970 has 32 divisors (see below), whose sum is σ = 171201710592. Its totient is φ = 34862838912.

The previous prime is 91133920963. The next prime is 91133920981. The reversal of 91133920970 is 7902933119.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1512134 + ... + 1571246.

It is an arithmetic number, because the mean of its divisors is an integer number (5350053456).

Almost surely, 2^91133920970 is an apocalyptic number.

91133920970 is a deficient number, since it is larger than the sum of its proper divisors (80067789622).

91133920970 is a wasteful number, since it uses less digits than its factorization.

91133920970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65846.

The product of its (nonzero) digits is 91854, while the sum is 44.

The spelling of 91133920970 in words is "ninety-one billion, one hundred thirty-three million, nine hundred twenty thousand, nine hundred seventy".