156795554491 has 4 divisors (see below), whose sum is σ = 156799107000. Its totient is φ = 156792001984.

The previous prime is 156795554479. The next prime is 156795554549. The reversal of 156795554491 is 194455597651.

156795554491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 156795554491 - 2⁵ = 156795554459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (156795554401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1709206 + ... + 1798603.

It is an arithmetic number, because the mean of its divisors is an integer number (39199776750).

Almost surely, 2^156795554491 is an apocalyptic number.

156795554491 is a deficient number, since it is larger than the sum of its proper divisors (3552509).

156795554491 is an equidigital number, since it uses as much as digits as its factorization.

156795554491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3552508.

The product of its digits is 34020000, while the sum is 61.

The spelling of 156795554491 in words is "one hundred fifty-six billion, seven hundred ninety-five million, five hundred fifty-four thousand, four hundred ninety-one".