91874482520 has 32 divisors (see below), whose sum is σ = 217597460400. Its totient is φ = 34815593088.

The previous prime is 91874482519. The next prime is 91874482523. The reversal of 91874482520 is 2528447819.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91874482523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60442979 + ... + 60444498.

Almost surely, 2^91874482520 is an apocalyptic number.

It is an amenable number.

91874482520 is an abundant number, since it is smaller than the sum of its proper divisors (125722977880).

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

91874482520 is a wasteful number, since it uses less digits than its factorization.

91874482520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120887507 (or 120887503 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 50.

The spelling of 91874482520 in words is "ninety-one billion, eight hundred seventy-four million, four hundred eighty-two thousand, five hundred twenty".