20256613024818 has 32 divisors (see below), whose sum is σ = 42659218641600. Its totient is φ = 6394767535296.

The previous prime is 20256613024783. The next prime is 20256613024853. The reversal of 20256613024818 is 81842031665202.

It is an interprime number because it is at equal distance from previous prime (20256613024783) and next prime (20256613024853).

It is an unprimeable number.

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, 28222221 + ... + 28931072.

It is an arithmetic number, because the mean of its divisors is an integer number (1333100582550).

Almost surely, 2^{20256613024818} is an apocalyptic number.

20256613024818 is an abundant number, since it is smaller than the sum of its proper divisors (22402605616782).

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

20256613024818 is a wasteful number, since it uses less digits than its factorization.

20256613024818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57156426.

The product of its (nonzero) digits is 1105920, while the sum is 48.

The spelling of 20256613024818 in words is "twenty trillion, two hundred fifty-six billion, six hundred thirteen million, twenty-four thousand, eight hundred eighteen".