91389099952 has 10 divisors (see below), whose sum is σ = 177066381188. Its totient is φ = 45694549968.

The previous prime is 91389099947. The next prime is 91389099979. The reversal of 91389099952 is 25999098319.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2855909358 + ... + 2855909389.

Almost surely, 2^91389099952 is an apocalyptic number.

It is an amenable number.

91389099952 is a deficient number, since it is larger than the sum of its proper divisors (85677281236).

91389099952 is a wasteful number, since it uses less digits than its factorization.

91389099952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5711818755 (or 5711818749 counting only the distinct ones).

The product of its (nonzero) digits is 14171760, while the sum is 64.

The spelling of 91389099952 in words is "ninety-one billion, three hundred eighty-nine million, ninety-nine thousand, nine hundred fifty-two".