47779563689 has 16 divisors (see below), whose sum is σ = 56647631040. Its totient is φ = 39726884160.

The previous prime is 47779563631. The next prime is 47779563709. The reversal of 47779563689 is 98636597774.

47779563689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47779563689 is a prime.

It is a super-2 number, since 2×47779563689² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (47779563289) 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, 1517087 + ... + 1548260.

It is an arithmetic number, because the mean of its divisors is an integer number (3540476940).

Almost surely, 2^47779563689 is an apocalyptic number.

It is an amenable number.

47779563689 is a deficient number, since it is larger than the sum of its proper divisors (8868067351).

47779563689 is a wasteful number, since it uses less digits than its factorization.

47779563689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3065480.

The product of its digits is 480090240, while the sum is 71.

The spelling of 47779563689 in words is "forty-seven billion, seven hundred seventy-nine million, five hundred sixty-three thousand, six hundred eighty-nine".