2649051664 has 20 divisors (see below), whose sum is σ = 5865757504. Its totient is φ = 1135307808.

The previous prime is 2649051641. The next prime is 2649051683. The reversal of 2649051664 is 4661509462.

It is a self number, because there is not a number n which added to its sum of digits gives 2649051664.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11826012 + ... + 11826235.

Almost surely, 2^2649051664 is an apocalyptic number.

It is an amenable number.

2649051664 is an abundant number, since it is smaller than the sum of its proper divisors (3216705840).

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

2649051664 is a wasteful number, since it uses less digits than its factorization.

2649051664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23652262 (or 23652256 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 43.

The square root of 2649051664 is about 51468.9388272189. The cubic root of 2649051664 is about 1383.6624105607.

The spelling of 2649051664 in words is "two billion, six hundred forty-nine million, fifty-one thousand, six hundred sixty-four".