91104940572 has 24 divisors (see below), whose sum is σ = 212596574736. Its totient is φ = 30365687808.

The previous prime is 91104940571. The next prime is 91104940573. The reversal of 91104940572 is 27504940119.

It is an interprime number because it is at equal distance from previous prime (91104940571) and next prime (91104940573).

It is a super-2 number, since 2×91104940572² (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 (91104940571) 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, 181003 + ... + 463650.

It is an arithmetic number, because the mean of its divisors is an integer number (8858190614).

Almost surely, 2^91104940572 is an apocalyptic number.

It is an amenable number.

91104940572 is an abundant number, since it is smaller than the sum of its proper divisors (121491634164).

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

91104940572 is a wasteful number, since it uses less digits than its factorization.

91104940572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656437 (or 656435 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 42.

The spelling of 91104940572 in words is "ninety-one billion, one hundred four million, nine hundred forty thousand, five hundred seventy-two".