20879092389456 has 80 divisors (see below), whose sum is σ = 68492260758400. Its totient is φ = 5965454967552.

The previous prime is 20879092389451. The next prime is 20879092389457. The reversal of 20879092389456 is 65498329097802.

20879092389456 is a `hidden beast` number, since 2 + 0 + 8 + 7 + 9 + 0 + 92 + 3 + 89 + 456 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20879092389451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3452227861 + ... + 3452233908.

It is an arithmetic number, because the mean of its divisors is an integer number (856153259480).

Almost surely, 2^{20879092389456} is an apocalyptic number.

It is an amenable number.

20879092389456 is an abundant number, since it is smaller than the sum of its proper divisors (47613168368944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20879092389456 is a wasteful number, since it uses less digits than its factorization.

20879092389456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6904461793 (or 6904461781 counting only the distinct ones).

The product of its (nonzero) digits is 470292480, while the sum is 72.

The spelling of 20879092389456 in words is "twenty trillion, eight hundred seventy-nine billion, ninety-two million, three hundred eighty-nine thousand, four hundred fifty-six".