20404316678713 has 64 divisors (see below), whose sum is σ = 23127027061248. Its totient is φ = 17994055200000.

The previous prime is 20404316678701. The next prime is 20404316678731. The reversal of 20404316678713 is 31787661340402.

It is not a de Polignac number, because 20404316678713 - 2⁹ = 20404316678201 is a prime.

It is a super-2 number, since 2×20404316678713² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20404316678773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2156671803 + ... + 2156681263.

It is an arithmetic number, because the mean of its divisors is an integer number (361359797832).

Almost surely, 2^{20404316678713} is an apocalyptic number.

It is an amenable number.

20404316678713 is a deficient number, since it is larger than the sum of its proper divisors (2722710382535).

20404316678713 is a wasteful number, since it uses less digits than its factorization.

20404316678713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9919 (or 9897 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 52.

The spelling of 20404316678713 in words is "twenty trillion, four hundred four billion, three hundred sixteen million, six hundred seventy-eight thousand, seven hundred thirteen".