91939899316 has 12 divisors (see below), whose sum is σ = 160987677732. Its totient is φ = 45943419968.

The previous prime is 91939899313. The next prime is 91939899347. The reversal of 91939899316 is 61399893919.

It can be written as a sum of positive squares in 2 ways, for example, as 72910800400 + 19029098916 = 270020^2 + 137946^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91939899313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6624625 + ... + 6638488.

It is an arithmetic number, because the mean of its divisors is an integer number (13415639811).

Almost surely, 2^91939899316 is an apocalyptic number.

It is an amenable number.

91939899316 is a deficient number, since it is larger than the sum of its proper divisors (69047778416).

91939899316 is a wasteful number, since it uses less digits than its factorization.

91939899316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13264850 (or 13264848 counting only the distinct ones).

The product of its digits is 25509168, while the sum is 67.

The spelling of 91939899316 in words is "ninety-one billion, nine hundred thirty-nine million, eight hundred ninety-nine thousand, three hundred sixteen".