20244156879 has 16 divisors (see below), whose sum is σ = 28418832000. Its totient is φ = 12783092256.

The previous prime is 20244156871. The next prime is 20244156901. The reversal of 20244156879 is 97865144202.

It is not a de Polignac number, because 20244156879 - 2³ = 20244156871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20244156871) 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 15 ways as a sum of consecutive naturals, for example, 255817 + ... + 325469.

It is an arithmetic number, because the mean of its divisors is an integer number (1776177000).

Almost surely, 2^20244156879 is an apocalyptic number.

20244156879 is a deficient number, since it is larger than the sum of its proper divisors (8174675121).

20244156879 is a wasteful number, since it uses less digits than its factorization.

20244156879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74774.

The product of its (nonzero) digits is 967680, while the sum is 48.

The spelling of 20244156879 in words is "twenty billion, two hundred forty-four million, one hundred fifty-six thousand, eight hundred seventy-nine".