91532745554 has 4 divisors (see below), whose sum is σ = 137299118334. Its totient is φ = 45766372776.

The previous prime is 91532745517. The next prime is 91532745587. The reversal of 91532745554 is 45554723519.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 71116622329 + 20416123225 = 266677^2 + 142885^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22883186387 + ... + 22883186390.

Almost surely, 2^91532745554 is an apocalyptic number.

91532745554 is a deficient number, since it is larger than the sum of its proper divisors (45766372780).

91532745554 is a wasteful number, since it uses less digits than its factorization.

91532745554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45766372779.

The product of its digits is 3780000, while the sum is 50.

The spelling of 91532745554 in words is "ninety-one billion, five hundred thirty-two million, seven hundred forty-five thousand, five hundred fifty-four".