7721192651 has 16 divisors (see below), whose sum is σ = 8219268288. Its totient is φ = 7228108800.

The previous prime is 7721192641. The next prime is 7721192741. The reversal of 7721192651 is 1562911277.

It is a cyclic number.

It is not a de Polignac number, because 7721192651 - 2²² = 7716998347 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7721192599 and 7721192608.

It is not an unprimeable number, because it can be changed into a prime (7721192641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2765066 + ... + 2767856.

It is an arithmetic number, because the mean of its divisors is an integer number (513704268).

Almost surely, 2^7721192651 is an apocalyptic number.

7721192651 is a deficient number, since it is larger than the sum of its proper divisors (498075637).

7721192651 is a wasteful number, since it uses less digits than its factorization.

7721192651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3622.

The product of its digits is 52920, while the sum is 41.

The square root of 7721192651 is about 87870.3172351164. The cubic root of 7721192651 is about 1976.4907956667.

The spelling of 7721192651 in words is "seven billion, seven hundred twenty-one million, one hundred ninety-two thousand, six hundred fifty-one".