20971814702874 has 64 divisors (see below), whose sum is σ = 48915774048000. Its totient is φ = 5991711796224.

The previous prime is 20971814702827. The next prime is 20971814702929. The reversal of 20971814702874 is 47820741817902.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56073162 + ... + 56445930.

It is an arithmetic number, because the mean of its divisors is an integer number (764308969500).

Almost surely, 2^{20971814702874} is an apocalyptic number.

20971814702874 is an abundant number, since it is smaller than the sum of its proper divisors (27943959345126).

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

20971814702874 is a wasteful number, since it uses less digits than its factorization.

20971814702874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400132 (or 400118 counting only the distinct ones).

The product of its (nonzero) digits is 12644352, while the sum is 60.

The spelling of 20971814702874 in words is "twenty trillion, nine hundred seventy-one billion, eight hundred fourteen million, seven hundred two thousand, eight hundred seventy-four".