91527091656 has 384 divisors, whose sum is σ = 327102105600. Its totient is φ = 20652503040.

The previous prime is 91527091619. The next prime is 91527091693. The reversal of 91527091656 is 65619072519.

It is an interprime number because it is at equal distance from previous prime (91527091619) and next prime (91527091693).

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 91527091599 and 91527091608.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5300685 + ... + 5317923.

It is an arithmetic number, because the mean of its divisors is an integer number (851828400).

Almost surely, 2^91527091656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91527091656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163551052800).

91527091656 is an abundant number, since it is smaller than the sum of its proper divisors (235575013944).

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

91527091656 is a wasteful number, since it uses less digits than its factorization.

91527091656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17309 (or 17292 counting only the distinct ones).

The product of its (nonzero) digits is 1020600, while the sum is 51.

The spelling of 91527091656 in words is "ninety-one billion, five hundred twenty-seven million, ninety-one thousand, six hundred fifty-six".