91542871040 has 88 divisors (see below), whose sum is σ = 226679736192. Its totient is φ = 35435888640.

The previous prime is 91542871037. The next prime is 91542871061. The reversal of 91542871040 is 4017824519.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129659 + ... + 447098.

Almost surely, 2^91542871040 is an apocalyptic number.

It is an amenable number.

91542871040 is an abundant number, since it is smaller than the sum of its proper divisors (135136865152).

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

91542871040 is a wasteful number, since it uses less digits than its factorization.

91542871040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576813 (or 576795 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 41.

The spelling of 91542871040 in words is "ninety-one billion, five hundred forty-two million, eight hundred seventy-one thousand, forty".