20960556879 has 16 divisors (see below), whose sum is σ = 28061280000. Its totient is φ = 13916847360.

The previous prime is 20960556839. The next prime is 20960556887. The reversal of 20960556879 is 97865506902.

It is not a de Polignac number, because 20960556879 - 2¹¹ = 20960554831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20960556829) 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, 1156324 + ... + 1174310.

It is an arithmetic number, because the mean of its divisors is an integer number (1753830000).

Almost surely, 2^20960556879 is an apocalyptic number.

20960556879 is a deficient number, since it is larger than the sum of its proper divisors (7100723121).

20960556879 is a wasteful number, since it uses less digits than its factorization.

20960556879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19550.

The product of its (nonzero) digits is 8164800, while the sum is 57.

The spelling of 20960556879 in words is "twenty billion, nine hundred sixty million, five hundred fifty-six thousand, eight hundred seventy-nine".