20401047878704 has 20 divisors (see below), whose sum is σ = 39527140982760. Its totient is φ = 10200495367040.

The previous prime is 20401047878699. The next prime is 20401047878713. The reversal of 20401047878704 is 40787874010402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4852659 + ... + 8021869.

It is an arithmetic number, because the mean of its divisors is an integer number (1976357049138).

Almost surely, 2^{20401047878704} is an apocalyptic number.

It is an amenable number.

20401047878704 is a deficient number, since it is larger than the sum of its proper divisors (19126093104056).

20401047878704 is a wasteful number, since it uses less digits than its factorization.

20401047878704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3571548 (or 3571542 counting only the distinct ones).

The product of its (nonzero) digits is 2809856, while the sum is 52.

The spelling of 20401047878704 in words is "twenty trillion, four hundred one billion, forty-seven million, eight hundred seventy-eight thousand, seven hundred four".