7651621772 has 12 divisors (see below), whose sum is σ = 13392119496. Its totient is φ = 3825301920.

The previous prime is 7651621759. The next prime is 7651621781. The reversal of 7651621772 is 2771261567.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92354 + ... + 154377.

It is an arithmetic number, because the mean of its divisors is an integer number (1116009958).

Almost surely, 2^7651621772 is an apocalyptic number.

It is an amenable number.

7651621772 is a deficient number, since it is larger than the sum of its proper divisors (5740497724).

7651621772 is a wasteful number, since it uses less digits than its factorization.

7651621772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254488 (or 254486 counting only the distinct ones).

The product of its digits is 246960, while the sum is 44.

The square root of 7651621772 is about 87473.5489848217. The cubic root of 7651621772 is about 1970.5365654309.

The spelling of 7651621772 in words is "seven billion, six hundred fifty-one million, six hundred twenty-one thousand, seven hundred seventy-two".