7651591516 has 12 divisors (see below), whose sum is σ = 13972471632. Its totient is φ = 3659456768.

The previous prime is 7651591513. The next prime is 7651591543. The reversal of 7651591516 is 6151951567.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7651591513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41584645 + ... + 41584828.

It is an arithmetic number, because the mean of its divisors is an integer number (1164372636).

Almost surely, 2^7651591516 is an apocalyptic number.

It is an amenable number.

7651591516 is a deficient number, since it is larger than the sum of its proper divisors (6320880116).

7651591516 is a wasteful number, since it uses less digits than its factorization.

7651591516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83169500 (or 83169498 counting only the distinct ones).

The product of its digits is 283500, while the sum is 46.

The square root of 7651591516 is about 87473.3760409417. The cubic root of 7651591516 is about 1970.5339681326.

The spelling of 7651591516 in words is "seven billion, six hundred fifty-one million, five hundred ninety-one thousand, five hundred sixteen".