91582767064 has 32 divisors (see below), whose sum is σ = 185687225280. Its totient is φ = 42180795904.

The previous prime is 91582767053. The next prime is 91582767071. The reversal of 91582767064 is 46076728519.

It is a junction number, because it is equal to n+sod(n) for n = 91582766996 and 91582767014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7157467 + ... + 7170250.

It is an arithmetic number, because the mean of its divisors is an integer number (5802725790).

Almost surely, 2^91582767064 is an apocalyptic number.

91582767064 is a gapful number since it is divisible by the number (94) formed by its first and last digit.

It is an amenable number.

91582767064 is an abundant number, since it is smaller than the sum of its proper divisors (94104458216).

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

91582767064 is a wasteful number, since it uses less digits than its factorization.

91582767064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14327787 (or 14327783 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 55.

The spelling of 91582767064 in words is "ninety-one billion, five hundred eighty-two million, seven hundred sixty-seven thousand, sixty-four".