2516305664 has 18 divisors (see below), whose sum is σ = 5022782520. Its totient is φ = 1258152704.

The previous prime is 2516305663. The next prime is 2516305697. The reversal of 2516305664 is 4665036152.

It is a happy number.

2516305664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2516305663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4914404 + ... + 4914915.

Almost surely, 2^2516305664 is an apocalyptic number.

It is an amenable number.

2516305664 is a deficient number, since it is larger than the sum of its proper divisors (2506476856).

2516305664 is an frugal number, since it uses more digits than its factorization.

2516305664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9829335 (or 9829321 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 38.

The square root of 2516305664 is about 50162.7916288557. The cubic root of 2516305664 is about 1360.1531084833.

The spelling of 2516305664 in words is "two billion, five hundred sixteen million, three hundred five thousand, six hundred sixty-four".