91715838048 has 72 divisors (see below), whose sum is σ = 261543718800. Its totient is φ = 30486753024.

The previous prime is 91715838043. The next prime is 91715838061. The reversal of 91715838048 is 84083851719.

91715838048 is a `hidden beast` number, since 9 + 17 + 1 + 583 + 8 + 0 + 48 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a junction number, because it is equal to n+sod(n) for n = 91715837985 and 91715838003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91715838043) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 340143 + ... + 546926.

It is an arithmetic number, because the mean of its divisors is an integer number (3632551650).

Almost surely, 2^91715838048 is an apocalyptic number.

It is an amenable number.

91715838048 is an abundant number, since it is smaller than the sum of its proper divisors (169827880752).

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

91715838048 is a wasteful number, since it uses less digits than its factorization.

91715838048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887444 (or 887433 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 54.

The spelling of 91715838048 in words is "ninety-one billion, seven hundred fifteen million, eight hundred thirty-eight thousand, forty-eight".