7779979653 has 16 divisors (see below), whose sum is σ = 10437999936. Its totient is φ = 5154347520.

The previous prime is 7779979651. The next prime is 7779979661. The reversal of 7779979653 is 3569799777.

It is not a de Polignac number, because 7779979653 - 2¹ = 7779979651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7779979651) 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, 917250 + ... + 925692.

It is an arithmetic number, because the mean of its divisors is an integer number (652374996).

Almost surely, 2^7779979653 is an apocalyptic number.

It is an amenable number.

7779979653 is a deficient number, since it is larger than the sum of its proper divisors (2658020283).

7779979653 is a wasteful number, since it uses less digits than its factorization.

7779979653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10324.

The product of its digits is 157529610, while the sum is 69.

The square root of 7779979653 is about 88204.1929445534. The cubic root of 7779979653 is about 1981.4942681538.

The spelling of 7779979653 in words is "seven billion, seven hundred seventy-nine million, nine hundred seventy-nine thousand, six hundred fifty-three".