11157005591 has 8 divisors (see below), whose sum is σ = 11342954064. Its totient is φ = 10971155520.

The previous prime is 11157005579. The next prime is 11157005597. The reversal of 11157005591 is 19550075111.

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 11157005591 - 2⁶ = 11157005527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11157005597) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224936 + ... + 270018.

It is an arithmetic number, because the mean of its divisors is an integer number (1417869258).

Almost surely, 2^11157005591 is an apocalyptic number.

11157005591 is a deficient number, since it is larger than the sum of its proper divisors (185948473).

11157005591 is an equidigital number, since it uses as much as digits as its factorization.

11157005591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49201.

The product of its (nonzero) digits is 7875, while the sum is 35.

The spelling of 11157005591 in words is "eleven billion, one hundred fifty-seven million, five thousand, five hundred ninety-one".