91093432104 has 24 divisors (see below), whose sum is σ = 246711378810. Its totient is φ = 30364477344.

The previous prime is 91093432093. The next prime is 91093432123. The reversal of 91093432104 is 40123439019.

It can be written as a sum of positive squares in only one way, i.e., 60118136100 + 30975296004 = 245190^2 + 175998^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 632593207 + ... + 632593350.

Almost surely, 2^91093432104 is an apocalyptic number.

It is an amenable number.

91093432104 is an abundant number, since it is smaller than the sum of its proper divisors (155617946706).

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

91093432104 is a wasteful number, since it uses less digits than its factorization.

91093432104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1265186569 (or 1265186562 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The spelling of 91093432104 in words is "ninety-one billion, ninety-three million, four hundred thirty-two thousand, one hundred four".