16634563436 has 12 divisors (see below), whose sum is σ = 29509260312. Its totient is φ = 8203346208.

The previous prime is 16634563433. The next prime is 16634563469. The reversal of 16634563436 is 63436543661.

It is not an unprimeable number, because it can be changed into a prime (16634563433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28483550 + ... + 28484133.

It is an arithmetic number, because the mean of its divisors is an integer number (2459105026).

Almost surely, 2^16634563436 is an apocalyptic number.

It is an amenable number.

16634563436 is a deficient number, since it is larger than the sum of its proper divisors (12874696876).

16634563436 is a wasteful number, since it uses less digits than its factorization.

16634563436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56967760 (or 56967758 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 47.

The spelling of 16634563436 in words is "sixteen billion, six hundred thirty-four million, five hundred sixty-three thousand, four hundred thirty-six".