16649270836704 has 144 divisors (see below), whose sum is σ = 51697673118000. Its totient is φ = 5040633415680.

The previous prime is 16649270836703. The next prime is 16649270836789. The reversal of 16649270836704 is 40763807294661.

It is a happy number.

16649270836704 is a `hidden beast` number, since 1 + 6 + 6 + 492 + 7 + 0 + 83 + 67 + 0 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16649270836703) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1079922 + ... + 5870670.

It is an arithmetic number, because the mean of its divisors is an integer number (359011618875).

Almost surely, 2^{16649270836704} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16649270836704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25848836559000).

16649270836704 is an abundant number, since it is smaller than the sum of its proper divisors (35048402281296).

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

16649270836704 is a wasteful number, since it uses less digits than its factorization.

16649270836704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4791873 (or 4791862 counting only the distinct ones).

The product of its (nonzero) digits is 73156608, while the sum is 63.

The spelling of 16649270836704 in words is "sixteen trillion, six hundred forty-nine billion, two hundred seventy million, eight hundred thirty-six thousand, seven hundred four".