7869817152 has 42 divisors (see below), whose sum is σ = 22557411578. Its totient is φ = 2623272192.

The previous prime is 7869817133. The next prime is 7869817159. The reversal of 7869817152 is 2517189687.

It can be written as a sum of positive squares in only one way, i.e., 4032758016 + 3837059136 = 63504^2 + 61944^2 .

It is a super-2 number, since 2×7869817152² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7869817159) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6830863 + ... + 6832014.

Almost surely, 2^7869817152 is an apocalyptic number.

7869817152 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

7869817152 is an abundant number, since it is smaller than the sum of its proper divisors (14687594426).

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

7869817152 is a wasteful number, since it uses less digits than its factorization.

7869817152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13662895 (or 13662882 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 54.

The square root of 7869817152 is about 88711.9898999002. The cubic root of 7869817152 is about 1989.0920457560.

The spelling of 7869817152 in words is "seven billion, eight hundred sixty-nine million, eight hundred seventeen thousand, one hundred fifty-two".