7940872515 has 8 divisors (see below), whose sum is σ = 12705396048. Its totient is φ = 4235132000.

The previous prime is 7940872463. The next prime is 7940872523. The reversal of 7940872515 is 5152780497.

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

It is not a de Polignac number, because 7940872515 - 2⁸ = 7940872259 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, 264695736 + ... + 264695765.

It is an arithmetic number, because the mean of its divisors is an integer number (1588174506).

Almost surely, 2^7940872515 is an apocalyptic number.

7940872515 is a deficient number, since it is larger than the sum of its proper divisors (4764523533).

7940872515 is a wasteful number, since it uses less digits than its factorization.

7940872515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529391509.

The product of its (nonzero) digits is 705600, while the sum is 48.

The square root of 7940872515 is about 89111.5734066008. The cubic root of 7940872515 is about 1995.0605203969.

The spelling of 7940872515 in words is "seven billion, nine hundred forty million, eight hundred seventy-two thousand, five hundred fifteen".