91537072067952 has 120 divisors (see below), whose sum is σ = 309995294540256. Its totient is φ = 24615010971648.

The previous prime is 91537072067941. The next prime is 91537072067953. The reversal of 91537072067952 is 25976027073519.

91537072067952 is a `hidden beast` number, since 9 + 1 + 5 + 370 + 7 + 206 + 7 + 9 + 52 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 91537072067952.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91537072067953) 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, 2670882493 + ... + 2670916764.

Almost surely, 2^{91537072067952} is an apocalyptic number.

It is an amenable number.

91537072067952 is an abundant number, since it is smaller than the sum of its proper divisors (218458222472304).

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

91537072067952 is a wasteful number, since it uses less digits than its factorization.

91537072067952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5341799295 (or 5341799286 counting only the distinct ones).

The product of its (nonzero) digits is 50009400, while the sum is 63.

The spelling of 91537072067952 in words is "ninety-one trillion, five hundred thirty-seven billion, seventy-two million, sixty-seven thousand, nine hundred fifty-two".