7986663500 has 24 divisors (see below), whose sum is σ = 17442874176. Its totient is φ = 3194665200.

The previous prime is 7986663473. The next prime is 7986663533. The reversal of 7986663500 is 53666897.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7986164 + ... + 7987163.

It is an arithmetic number, because the mean of its divisors is an integer number (726786424).

Almost surely, 2^7986663500 is an apocalyptic number.

It is an amenable number.

7986663500 is an abundant number, since it is smaller than the sum of its proper divisors (9456210676).

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

7986663500 is a wasteful number, since it uses less digits than its factorization.

7986663500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15973346 (or 15973334 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 50.

The square root of 7986663500 is about 89368.1347013576. The cubic root of 7986663500 is about 1998.8880068502. Note that the first 3 decimals are identical.

The spelling of 7986663500 in words is "seven billion, nine hundred eighty-six million, six hundred sixty-three thousand, five hundred".