16505056434 has 16 divisors (see below), whose sum is σ = 33027230880. Its totient is φ = 5498832480.

The previous prime is 16505056429. The next prime is 16505056471. The reversal of 16505056434 is 43465050561.

It is a junction number, because it is equal to n+sod(n) for n = 16505056392 and 16505056401.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 700699 + ... + 723870.

It is an arithmetic number, because the mean of its divisors is an integer number (2064201930).

Almost surely, 2^16505056434 is an apocalyptic number.

16505056434 is an abundant number, since it is smaller than the sum of its proper divisors (16522174446).

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

16505056434 is a wasteful number, since it uses less digits than its factorization.

16505056434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1426505.

The product of its (nonzero) digits is 216000, while the sum is 39.

The spelling of 16505056434 in words is "sixteen billion, five hundred five million, fifty-six thousand, four hundred thirty-four".