2640976011664 has 45 divisors (see below), whose sum is σ = 5400627856203. Its totient is φ = 1250930133216.

The previous prime is 2640976011617. The next prime is 2640976011727. The reversal of 2640976011664 is 4661106790462.

The square root of 2640976011664 is 1625108.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 123497517 + ... + 123518899.

Almost surely, 2^{2640976011664} is an apocalyptic number.

2640976011664 is the 1625108-th square number.

It is an amenable number.

2640976011664 is an abundant number, since it is smaller than the sum of its proper divisors (2759651844539).

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

2640976011664 is an frugal number, since it uses more digits than its factorization.

2640976011664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42812 (or 21404 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 52.

The spelling of 2640976011664 in words is "two trillion, six hundred forty billion, nine hundred seventy-six million, eleven thousand, six hundred sixty-four".