156551151611 has 4 divisors (see below), whose sum is σ = 160369472424. Its totient is φ = 152732830800.

The previous prime is 156551151593. The next prime is 156551151661. The reversal of 156551151611 is 116151155651.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-156551151611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (156551151661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1909160345 + ... + 1909160426.

It is an arithmetic number, because the mean of its divisors is an integer number (40092368106).

Almost surely, 2^156551151611 is an apocalyptic number.

156551151611 is a deficient number, since it is larger than the sum of its proper divisors (3818320813).

156551151611 is an equidigital number, since it uses as much as digits as its factorization.

156551151611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3818320812.

The product of its digits is 22500, while the sum is 38.

The spelling of 156551151611 in words is "one hundred fifty-six billion, five hundred fifty-one million, one hundred fifty-one thousand, six hundred eleven".