5256639360 has 384 divisors, whose sum is σ = 21968107200. Its totient is φ = 1130692608.

The previous prime is 5256639359. The next prime is 5256639379. The reversal of 5256639360 is 639366525.

5256639360 is a `hidden beast` number, since 5 + 2 + 5 + 6 + 639 + 3 + 6 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

It is a super-2 number, since 2×5256639360² = 55264514722202419200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 681606 + ... + 689274.

Almost surely, 2^5256639360 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5256639360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10984053600).

5256639360 is an abundant number, since it is smaller than the sum of its proper divisors (16711467840).

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

5256639360 is a wasteful number, since it uses less digits than its factorization.

5256639360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7718 (or 7703 counting only the distinct ones).

The product of its (nonzero) digits is 874800, while the sum is 45.

The square root of 5256639360 is about 72502.6851916534. The cubic root of 5256639360 is about 1738.7456675350.

The spelling of 5256639360 in words is "five billion, two hundred fifty-six million, six hundred thirty-nine thousand, three hundred sixty".