20842260879 has 32 divisors (see below), whose sum is σ = 31791110400. Its totient is φ = 12028988160.

The previous prime is 20842260871. The next prime is 20842260917. The reversal of 20842260879 is 97806224802.

It is not a de Polignac number, because 20842260879 - 2³ = 20842260871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20842260871) 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 31 ways as a sum of consecutive naturals, for example, 79309 + ... + 219030.

It is an arithmetic number, because the mean of its divisors is an integer number (993472200).

Almost surely, 2^20842260879 is an apocalyptic number.

20842260879 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

20842260879 is a deficient number, since it is larger than the sum of its proper divisors (10948849521).

20842260879 is a wasteful number, since it uses less digits than its factorization.

20842260879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298455.

The product of its (nonzero) digits is 774144, while the sum is 48.

The spelling of 20842260879 in words is "twenty billion, eight hundred forty-two million, two hundred sixty thousand, eight hundred seventy-nine".