91532745555 has 16 divisors (see below), whose sum is σ = 149215646880. Its totient is φ = 47896379648.

The previous prime is 91532745517. The next prime is 91532745587. The reversal of 91532745555 is 55554723519.

It is a cyclic number.

It is not a de Polignac number, because 91532745555 - 2¹³ = 91532737363 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91532745498 and 91532745507.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57566970 + ... + 57568559.

It is an arithmetic number, because the mean of its divisors is an integer number (9325977930).

Almost surely, 2^91532745555 is an apocalyptic number.

91532745555 is a deficient number, since it is larger than the sum of its proper divisors (57682901325).

91532745555 is a wasteful number, since it uses less digits than its factorization.

91532745555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115135590.

The product of its digits is 4725000, while the sum is 51.

The spelling of 91532745555 in words is "ninety-one billion, five hundred thirty-two million, seven hundred forty-five thousand, five hundred fifty-five".