91195079064 has 48 divisors (see below), whose sum is σ = 235579439160. Its totient is φ = 29417760000.

The previous prime is 91195079039. The next prime is 91195079081. The reversal of 91195079064 is 46097059119.

It is a super-2 number, since 2×91195079064² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 91195078998 and 91195079016.

It is a congruent number.

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, 1953937 + ... + 2000064.

Almost surely, 2^91195079064 is an apocalyptic number.

It is an amenable number.

91195079064 is an abundant number, since it is smaller than the sum of its proper divisors (144384360096).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91195079064 is a wasteful number, since it uses less digits than its factorization.

91195079064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3954072 (or 3954037 counting only the distinct ones).

The product of its (nonzero) digits is 612360, while the sum is 51.

The spelling of 91195079064 in words is "ninety-one billion, one hundred ninety-five million, seventy-nine thousand, sixty-four".