20996008494078 has 16 divisors (see below), whose sum is σ = 42141454774416. Its totient is φ = 6973763200320.

The previous prime is 20996008494047. The next prime is 20996008494089. The reversal of 20996008494078 is 87049480069902.

It is a super-2 number, since 2×20996008494078² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6226572601 + ... + 6226575972.

It is an arithmetic number, because the mean of its divisors is an integer number (2633840923401).

Almost surely, 2^{20996008494078} is an apocalyptic number.

20996008494078 is an abundant number, since it is smaller than the sum of its proper divisors (21145446280338).

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

20996008494078 is a wasteful number, since it uses less digits than its factorization.

20996008494078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12453148859.

The product of its (nonzero) digits is 62705664, while the sum is 66.

The spelling of 20996008494078 in words is "twenty trillion, nine hundred ninety-six billion, eight million, four hundred ninety-four thousand, seventy-eight".