16565434560054 has 24 divisors (see below), whose sum is σ = 38003055756120. Its totient is φ = 5196999077568.

The previous prime is 16565434560023. The next prime is 16565434560061. The reversal of 16565434560054 is 45006543456561.

16565434560054 is a `hidden beast` number, since 1 + 6 + 5 + 6 + 543 + 45 + 6 + 0 + 0 + 54 = 666.

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, 27067703224 + ... + 27067703835.

It is an arithmetic number, because the mean of its divisors is an integer number (1583460656505).

Almost surely, 2^{16565434560054} is an apocalyptic number.

16565434560054 is an abundant number, since it is smaller than the sum of its proper divisors (21437621196066).

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

16565434560054 is a wasteful number, since it uses less digits than its factorization.

16565434560054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54135407084 (or 54135407081 counting only the distinct ones).

The product of its (nonzero) digits is 25920000, while the sum is 54.

The spelling of 16565434560054 in words is "sixteen trillion, five hundred sixty-five billion, four hundred thirty-four million, five hundred sixty thousand, fifty-four".