7661115715 has 32 divisors (see below), whose sum is σ = 10364608512. Its totient is φ = 5385744000.

The previous prime is 7661115677. The next prime is 7661115719. The reversal of 7661115715 is 5175111667.

It is not a de Polignac number, because 7661115715 - 2⁷ = 7661115587 is a prime.

It is a super-2 number, since 2×7661115715² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7661115719) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1861510 + ... + 1865620.

It is an arithmetic number, because the mean of its divisors is an integer number (323894016).

Almost surely, 2^7661115715 is an apocalyptic number.

7661115715 is a deficient number, since it is larger than the sum of its proper divisors (2703492797).

7661115715 is a wasteful number, since it uses less digits than its factorization.

7661115715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5251.

The product of its digits is 44100, while the sum is 40.

The square root of 7661115715 is about 87527.7996695907. The cubic root of 7661115715 is about 1971.3512262604.

The spelling of 7661115715 in words is "seven billion, six hundred sixty-one million, one hundred fifteen thousand, seven hundred fifteen".