91755005555 has 8 divisors (see below), whose sum is σ = 113081844912. Its totient is φ = 71420112288.

The previous prime is 91755005549. The next prime is 91755005569. The reversal of 91755005555 is 55550055719.

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

It is a cyclic number.

It is not a de Polignac number, because 91755005555 - 2¹⁴ = 91754989171 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 247986317 + ... + 247986686.

It is an arithmetic number, because the mean of its divisors is an integer number (14135230614).

Almost surely, 2^91755005555 is an apocalyptic number.

91755005555 is a deficient number, since it is larger than the sum of its proper divisors (21326839357).

91755005555 is a wasteful number, since it uses less digits than its factorization.

91755005555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495973045.

The product of its (nonzero) digits is 984375, while the sum is 47.

The spelling of 91755005555 in words is "ninety-one billion, seven hundred fifty-five million, five thousand, five hundred fifty-five".