5144642564 has 6 divisors (see below), whose sum is σ = 9003124494. Its totient is φ = 2572321280.

The previous prime is 5144642533. The next prime is 5144642579. The reversal of 5144642564 is 4652464415.

It can be written as a sum of positive squares in only one way, i.e., 4268008900 + 876633664 = 65330^2 + 29608^2 .

It is a super-2 number, since 2×5144642564² = 52934694222640988192, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 643080317 + ... + 643080324.

It is an arithmetic number, because the mean of its divisors is an integer number (1500520749).

Almost surely, 2^5144642564 is an apocalyptic number.

It is an amenable number.

5144642564 is a deficient number, since it is larger than the sum of its proper divisors (3858481930).

5144642564 is a wasteful number, since it uses less digits than its factorization.

5144642564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1286160645 (or 1286160643 counting only the distinct ones).

The product of its digits is 460800, while the sum is 41.

The square root of 5144642564 is about 71726.1637340239. The cubic root of 5144642564 is about 1726.3084731926.

The spelling of 5144642564 in words is "five billion, one hundred forty-four million, six hundred forty-two thousand, five hundred sixty-four".