91367550650 has 24 divisors (see below), whose sum is σ = 173150133084. Its totient is φ = 35857452800.

The previous prime is 91367550641. The next prime is 91367550661. The reversal of 91367550650 is 5605576319.

It can be written as a sum of positive squares in 6 ways, for example, as 68336756569 + 23030794081 = 261413^2 + 151759^2 .

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 91367550595 and 91367550604.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17236511 + ... + 17241810.

Almost surely, 2^91367550650 is an apocalyptic number.

91367550650 is a deficient number, since it is larger than the sum of its proper divisors (81782582434).

91367550650 is a wasteful number, since it uses less digits than its factorization.

91367550650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34478386 (or 34478381 counting only the distinct ones).

The product of its (nonzero) digits is 850500, while the sum is 47.

The spelling of 91367550650 in words is "ninety-one billion, three hundred sixty-seven million, five hundred fifty thousand, six hundred fifty".