20077454561904 has 120 divisors (see below), whose sum is σ = 58264611600000. Its totient is φ = 6446360471040.

The previous prime is 20077454561873. The next prime is 20077454561911. The reversal of 20077454561904 is 40916545477002.

20077454561904 is a `hidden beast` number, since 2 + 0 + 0 + 7 + 7 + 4 + 545 + 6 + 1 + 90 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3951904 + ... + 7468095.

It is an arithmetic number, because the mean of its divisors is an integer number (485538430000).

Almost surely, 2^{20077454561904} is an apocalyptic number.

20077454561904 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20077454561904 is an abundant number, since it is smaller than the sum of its proper divisors (38187157038096).

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

20077454561904 is a wasteful number, since it uses less digits than its factorization.

20077454561904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11420463 (or 11420454 counting only the distinct ones).

The product of its (nonzero) digits is 8467200, while the sum is 54.

The spelling of 20077454561904 in words is "twenty trillion, seventy-seven billion, four hundred fifty-four million, five hundred sixty-one thousand, nine hundred four".