2649980271376 has 15 divisors (see below), whose sum is σ = 5134349391861. Its totient is φ = 1324986879936.

The previous prime is 2649980271373. The next prime is 2649980271461. The reversal of 2649980271376 is 6731720899462.

The square root of 2649980271376 is 1627876.

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

It can be written as a sum of positive squares in only one way, i.e., 824238831376 + 1825741440000 = 907876^2 + 1351200^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2649980271373) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 6308020 + ... + 6714988.

Almost surely, 2^{2649980271376} is an apocalyptic number.

2649980271376 is the 1627876-th square number.

It is an amenable number.

2649980271376 is a deficient number, since it is larger than the sum of its proper divisors (2484369120485).

2649980271376 is an frugal number, since it uses more digits than its factorization.

2649980271376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813946 (or 406971 counting only the distinct ones).

The product of its (nonzero) digits is 54867456, while the sum is 64.

Multiplying 2649980271376 by its sum of digits (64), we get a square (169598737368064 = 13023008²).

The spelling of 2649980271376 in words is "two trillion, six hundred forty-nine billion, nine hundred eighty million, two hundred seventy-one thousand, three hundred seventy-six".