91975954358 has 16 divisors (see below), whose sum is σ = 138337144944. Its totient is φ = 45863677440.

The previous prime is 91975954249. The next prime is 91975954429. The reversal of 91975954358 is 85345957919.

It is a junction number, because it is equal to n+sod(n) for n = 91975954294 and 91975954303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1818593 + ... + 1868483.

It is an arithmetic number, because the mean of its divisors is an integer number (8646071559).

Almost surely, 2^91975954358 is an apocalyptic number.

91975954358 is a deficient number, since it is larger than the sum of its proper divisors (46361190586).

91975954358 is a wasteful number, since it uses less digits than its factorization.

91975954358 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52367.

The product of its digits is 61236000, while the sum is 65.

The spelling of 91975954358 in words is "ninety-one billion, nine hundred seventy-five million, nine hundred fifty-four thousand, three hundred fifty-eight".