156018811811 has 4 divisors (see below), whose sum is σ = 157563552624. Its totient is φ = 154474071000.

The previous prime is 156018811801. The next prime is 156018811867. The reversal of 156018811811 is 118118810651.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 118118810651 = 739 ⋅159836009.

It is a cyclic number.

It is not a de Polignac number, because 156018811811 - 2¹⁸ = 156018549667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (156018811801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 772370255 + ... + 772370456.

It is an arithmetic number, because the mean of its divisors is an integer number (39390888156).

Almost surely, 2^156018811811 is an apocalyptic number.

156018811811 is a deficient number, since it is larger than the sum of its proper divisors (1544740813).

156018811811 is a wasteful number, since it uses less digits than its factorization.

156018811811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1544740812.

The product of its (nonzero) digits is 15360, while the sum is 41.

The spelling of 156018811811 in words is "one hundred fifty-six billion, eighteen million, eight hundred eleven thousand, eight hundred eleven".