91478070574 has 8 divisors (see below), whose sum is σ = 149691388248. Its totient is φ = 41580941160.

The previous prime is 91478070557. The next prime is 91478070577. The reversal of 91478070574 is 47507087419.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91478070577) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2079047037 + ... + 2079047080.

It is an arithmetic number, because the mean of its divisors is an integer number (18711423531).

Almost surely, 2^91478070574 is an apocalyptic number.

91478070574 is a deficient number, since it is larger than the sum of its proper divisors (58213317674).

91478070574 is a wasteful number, since it uses less digits than its factorization.

91478070574 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4158094130.

The product of its (nonzero) digits is 1975680, while the sum is 52.

The spelling of 91478070574 in words is "ninety-one billion, four hundred seventy-eight million, seventy thousand, five hundred seventy-four".