5160642640 has 20 divisors (see below), whose sum is σ = 11998494324. Its totient is φ = 2064257024.

The previous prime is 5160642631. The next prime is 5160642659. The reversal of 5160642640 is 462460615.

It can be written as a sum of positive squares in 2 ways, for example, as 3305790016 + 1854852624 = 57496^2 + 43068^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 5160642596 and 5160642605.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32253937 + ... + 32254096.

Almost surely, 2^5160642640 is an apocalyptic number.

It is an amenable number.

5160642640 is an abundant number, since it is smaller than the sum of its proper divisors (6837851684).

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

5160642640 is a wasteful number, since it uses less digits than its factorization.

5160642640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64508046 (or 64508040 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 5160642640 is about 71837.6129892969. The cubic root of 5160642640 is about 1728.0962541405.

The spelling of 5160642640 in words is "five billion, one hundred sixty million, six hundred forty-two thousand, six hundred forty".