5256962640 has 160 divisors (see below), whose sum is σ = 18691660800. Its totient is φ = 1356618240.

The previous prime is 5256962611. The next prime is 5256962677. The reversal of 5256962640 is 462696525.

It is a happy number.

5256962640 is a `hidden beast` number, since 525 + 6 + 9 + 62 + 64 + 0 = 666.

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 31 ways as a sum of consecutive naturals, for example, 27706 + ... + 106214.

It is an arithmetic number, because the mean of its divisors is an integer number (116822880).

Almost surely, 2^5256962640 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 5256962640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9345830400).

5256962640 is an abundant number, since it is smaller than the sum of its proper divisors (13434698160).

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

5256962640 is a wasteful number, since it uses less digits than its factorization.

5256962640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78562 (or 78550 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 45.

The square root of 5256962640 is about 72504.9145920468. The cubic root of 5256962640 is about 1738.7813107244.

The spelling of 5256962640 in words is "five billion, two hundred fifty-six million, nine hundred sixty-two thousand, six hundred forty".