7999512315 has 8 divisors (see below), whose sum is σ = 12799219728. Its totient is φ = 4266406560.

The previous prime is 7999512307. The next prime is 7999512347. The reversal of 7999512315 is 5132159997.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7999512315 - 2³ = 7999512307 is a prime.

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, 266650396 + ... + 266650425.

It is an arithmetic number, because the mean of its divisors is an integer number (1599902466).

Almost surely, 2^7999512315 is an apocalyptic number.

7999512315 is a deficient number, since it is larger than the sum of its proper divisors (4799707413).

7999512315 is a wasteful number, since it uses less digits than its factorization.

7999512315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533300829.

The product of its digits is 765450, while the sum is 51.

The square root of 7999512315 is about 89439.9928164129. The cubic root of 7999512315 is about 1999.9593587575.

The spelling of 7999512315 in words is "seven billion, nine hundred ninety-nine million, five hundred twelve thousand, three hundred fifteen".