5664637276649 has 16 divisors (see below), whose sum is σ = 6203702775312. Its totient is φ = 5140790074368.

The previous prime is 5664637276619. The next prime is 5664637276663. The reversal of 5664637276649 is 9466727364665.

It can be written as a sum of positive squares in 8 ways, for example, as 891264388624 + 4773372888025 = 944068^2 + 2184805^2 .

It is a de Polignac number, because none of the positive numbers 2^k-5664637276649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5664637276609) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9238202 + ... + 9832275.

It is an arithmetic number, because the mean of its divisors is an integer number (387731423457).

Almost surely, 2^{5664637276649} is an apocalyptic number.

It is an amenable number.

5664637276649 is a deficient number, since it is larger than the sum of its proper divisors (539065498663).

5664637276649 is a wasteful number, since it uses less digits than its factorization.

5664637276649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19070876.

The product of its digits is 1646023680, while the sum is 71.

The spelling of 5664637276649 in words is "five trillion, six hundred sixty-four billion, six hundred thirty-seven million, two hundred seventy-six thousand, six hundred forty-nine".