5143540644 has 72 divisors (see below), whose sum is σ = 14567087808. Its totient is φ = 1516518720.

The previous prime is 5143540637. The next prime is 5143540687. The reversal of 5143540644 is 4460453415.

5143540644 is a `hidden beast` number, since 5 + 1 + 4 + 3 + 5 + 4 + 0 + 644 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 5143540599 and 5143540608.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 160872 + ... + 190175.

It is an arithmetic number, because the mean of its divisors is an integer number (202320664).

Almost surely, 2^5143540644 is an apocalyptic number.

It is an amenable number.

5143540644 is an abundant number, since it is smaller than the sum of its proper divisors (9423547164).

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

5143540644 is a wasteful number, since it uses less digits than its factorization.

5143540644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351105 (or 351100 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

The square root of 5143540644 is about 71718.4818857733. The cubic root of 5143540644 is about 1726.1852129506.

The spelling of 5143540644 in words is "five billion, one hundred forty-three million, five hundred forty thousand, six hundred forty-four".