20404457323392 has 128 divisors (see below), whose sum is σ = 54279116236800. Its totient is φ = 6791481538560.

The previous prime is 20404457323351. The next prime is 20404457323423. The reversal of 20404457323392 is 29332375440402.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 854195673 + ... + 854219559.

It is an arithmetic number, because the mean of its divisors is an integer number (424055595600).

Almost surely, 2^{20404457323392} is an apocalyptic number.

It is an amenable number.

20404457323392 is an abundant number, since it is smaller than the sum of its proper divisors (33874658913408).

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

20404457323392 is a wasteful number, since it uses less digits than its factorization.

20404457323392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27084 (or 27072 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 48.

The spelling of 20404457323392 in words is "twenty trillion, four hundred four billion, four hundred fifty-seven million, three hundred twenty-three thousand, three hundred ninety-two".