20173164548454 has 24 divisors (see below), whose sum is σ = 43709078478312. Its totient is φ = 6724302753600.

The previous prime is 20173164548443. The next prime is 20173164548473. The reversal of 20173164548454 is 45484546137102.

20173164548454 is a `hidden beast` number, since 2 + 0 + 1 + 7 + 31 + 64 + 548 + 4 + 5 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 20173164548454.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5654772 + ... + 8504279.

It is an arithmetic number, because the mean of its divisors is an integer number (1821211603263).

Almost surely, 2^{20173164548454} is an apocalyptic number.

20173164548454 is an abundant number, since it is smaller than the sum of its proper divisors (23535913929858).

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

20173164548454 is a wasteful number, since it uses less digits than its factorization.

20173164548454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14238212 (or 14238209 counting only the distinct ones).

The product of its (nonzero) digits is 12902400, while the sum is 54.

The spelling of 20173164548454 in words is "twenty trillion, one hundred seventy-three billion, one hundred sixty-four million, five hundred forty-eight thousand, four hundred fifty-four".