91610828160 has 128 divisors (see below), whose sum is σ = 293264206560. Its totient is φ = 24324587520.

The previous prime is 91610828147. The next prime is 91610828167. The reversal of 91610828160 is 6182801619.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×91610828160² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91610828167) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 344970 + ... + 549750.

Almost surely, 2^91610828160 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 91610828160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146632103280).

91610828160 is an abundant number, since it is smaller than the sum of its proper divisors (201653378400).

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

91610828160 is a wasteful number, since it uses less digits than its factorization.

91610828160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205036 (or 205024 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 42.

The spelling of 91610828160 in words is "ninety-one billion, six hundred ten million, eight hundred twenty-eight thousand, one hundred sixty".