16449490764 has 36 divisors (see below), whose sum is σ = 47520751824. Its totient is φ = 4699854432.

The previous prime is 16449490669. The next prime is 16449490781. The reversal of 16449490764 is 46709494461.

16449490764 is a `hidden beast` number, since 1 + 6 + 4 + 494 + 90 + 7 + 64 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 16449490764.

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, 32637627 + ... + 32638130.

It is an arithmetic number, because the mean of its divisors is an integer number (1320020884).

Almost surely, 2^16449490764 is an apocalyptic number.

16449490764 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

16449490764 is an abundant number, since it is smaller than the sum of its proper divisors (31071261060).

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

16449490764 is a wasteful number, since it uses less digits than its factorization.

16449490764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65275774 (or 65275769 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 54.

The spelling of 16449490764 in words is "sixteen billion, four hundred forty-nine million, four hundred ninety thousand, seven hundred sixty-four".