91516767552 has 168 divisors, whose sum is σ = 309461115392. Its totient is φ = 25304140800.

The previous prime is 91516767533. The next prime is 91516767557. The reversal of 91516767552 is 25576761519.

91516767552 is a `hidden beast` number, since 9 + 1 + 5 + 16 + 76 + 7 + 552 = 666.

It is a tau number, because it is divible by the number of its divisors (168).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91516767557) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 241099 + ... + 491082.

Almost surely, 2^91516767552 is an apocalyptic number.

It is an amenable number.

91516767552 is an abundant number, since it is smaller than the sum of its proper divisors (217944347840).

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

91516767552 is a wasteful number, since it uses less digits than its factorization.

91516767552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732237 (or 732224 counting only the distinct ones).

The product of its digits is 3969000, while the sum is 54.

The spelling of 91516767552 in words is "ninety-one billion, five hundred sixteen million, seven hundred sixty-seven thousand, five hundred fifty-two".