20812419174 has 16 divisors (see below), whose sum is σ = 42246105408. Its totient is φ = 6833928552.

The previous prime is 20812419169. The next prime is 20812419181. The reversal of 20812419174 is 47191421802.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25885692 + ... + 25886495.

It is an arithmetic number, because the mean of its divisors is an integer number (2640381588).

Almost surely, 2^20812419174 is an apocalyptic number.

20812419174 is an abundant number, since it is smaller than the sum of its proper divisors (21433686234).

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

20812419174 is a wasteful number, since it uses less digits than its factorization.

20812419174 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51772259.

The product of its (nonzero) digits is 32256, while the sum is 39.

The spelling of 20812419174 in words is "twenty billion, eight hundred twelve million, four hundred nineteen thousand, one hundred seventy-four".