611056056155 has 4 divisors (see below), whose sum is σ = 733267267392. Its totient is φ = 488844844920.

The previous prime is 611056056119. The next prime is 611056056161. The reversal of 611056056155 is 551650650116.

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

It is not a de Polignac number, because 611056056155 - 2²⁰ = 611055007579 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61105605611 + ... + 61105605620.

It is an arithmetic number, because the mean of its divisors is an integer number (183316816848).

Almost surely, 2^611056056155 is an apocalyptic number.

611056056155 is a deficient number, since it is larger than the sum of its proper divisors (122211211237).

611056056155 is a wasteful number, since it uses less digits than its factorization.

611056056155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122211211236.

The product of its (nonzero) digits is 135000, while the sum is 41.

The spelling of 611056056155 in words is "six hundred eleven billion, fifty-six million, fifty-six thousand, one hundred fifty-five".