7579621649 has 16 divisors (see below), whose sum is σ = 8077708800. Its totient is φ = 7087449600.

The previous prime is 7579621633. The next prime is 7579621657. The reversal of 7579621649 is 9461269757.

It is not a de Polignac number, because 7579621649 - 2⁴ = 7579621633 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7579621594 and 7579621603.

It is not an unprimeable number, because it can be changed into a prime (7579621619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3222824 + ... + 3225174.

It is an arithmetic number, because the mean of its divisors is an integer number (504856800).

Almost surely, 2^7579621649 is an apocalyptic number.

It is an amenable number.

7579621649 is a deficient number, since it is larger than the sum of its proper divisors (498087151).

7579621649 is a wasteful number, since it uses less digits than its factorization.

7579621649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3520.

The product of its digits is 5715360, while the sum is 56.

The square root of 7579621649 is about 87061.0225588926. The cubic root of 7579621649 is about 1964.3363010933.

The spelling of 7579621649 in words is "seven billion, five hundred seventy-nine million, six hundred twenty-one thousand, six hundred forty-nine".