91722193036 has 12 divisors (see below), whose sum is σ = 168961934680. Its totient is φ = 43447354560.

The previous prime is 91722193033. The next prime is 91722193037. The reversal of 91722193036 is 63039122719.

It is a junction number, because it is equal to n+sod(n) for n = 91722192983 and 91722193001.

It is not an unprimeable number, because it can be changed into a prime (91722193033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 603435405 + ... + 603435556.

Almost surely, 2^91722193036 is an apocalyptic number.

It is an amenable number.

91722193036 is a deficient number, since it is larger than the sum of its proper divisors (77239741644).

91722193036 is a wasteful number, since it uses less digits than its factorization.

91722193036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1206870984 (or 1206870982 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 43.

The spelling of 91722193036 in words is "ninety-one billion, seven hundred twenty-two million, one hundred ninety-three thousand, thirty-six".