16646570046 has 24 divisors (see below), whose sum is σ = 36072854064. Its totient is φ = 5548043520.

The previous prime is 16646570041. The next prime is 16646570069. The reversal of 16646570046 is 64007564661.

16646570046 is a `hidden beast` number, since 16 + 64 + 6 + 570 + 0 + 4 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 16646569983 and 16646570010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16646570041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65566 + ... + 193886.

It is an arithmetic number, because the mean of its divisors is an integer number (1503035586).

Almost surely, 2^16646570046 is an apocalyptic number.

16646570046 is an abundant number, since it is smaller than the sum of its proper divisors (19426284018).

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

16646570046 is a wasteful number, since it uses less digits than its factorization.

16646570046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135536 (or 135533 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 16646570046 in words is "sixteen billion, six hundred forty-six million, five hundred seventy thousand, forty-six".