7899757632 has 420 divisors, whose sum is σ = 25916875776. Its totient is φ = 2377589760.

The previous prime is 7899757601. The next prime is 7899757639. The reversal of 7899757632 is 2367579987.

Its product of digits (40007520) is a multiple of the sum of its prime divisors (216).

It is a self number, because there is not a number n which added to its sum of digits gives 7899757632.

It is not an unprimeable number, because it can be changed into a prime (7899757639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 62202753 + ... + 62202879.

Almost surely, 2^7899757632 is an apocalyptic number.

7899757632 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7899757632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12958437888).

7899757632 is an abundant number, since it is smaller than the sum of its proper divisors (18017118144).

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

7899757632 is a wasteful number, since it uses less digits than its factorization.

7899757632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248 (or 216 counting only the distinct ones).

The product of its digits is 40007520, while the sum is 63.

The square root of 7899757632 is about 88880.5807361766. The cubic root of 7899757632 is about 1991.6113336642.

The spelling of 7899757632 in words is "seven billion, eight hundred ninety-nine million, seven hundred fifty-seven thousand, six hundred thirty-two".