91055000055 has 16 divisors (see below), whose sum is σ = 145772108640. Its totient is φ = 48534630528.

The previous prime is 91055000053. The next prime is 91055000087. The reversal of 91055000055 is 55000055019.

It is not a de Polignac number, because 91055000055 - 2¹ = 91055000053 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91054999986 and 91055000031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91055000053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1725400 + ... + 1777389.

It is an arithmetic number, because the mean of its divisors is an integer number (9110756790).

Almost surely, 2^91055000055 is an apocalyptic number.

91055000055 is a deficient number, since it is larger than the sum of its proper divisors (54717108585).

91055000055 is a wasteful number, since it uses less digits than its factorization.

91055000055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3504530.

The product of its (nonzero) digits is 5625, while the sum is 30.

The spelling of 91055000055 in words is "ninety-one billion, fifty-five million, fifty-five", and thus it is an aban number and an uban number.