7782899764 has 12 divisors (see below), whose sum is σ = 13909863744. Its totient is φ = 3808652984.

The previous prime is 7782899749. The next prime is 7782899771. The reversal of 7782899764 is 4679982877.

It is a self number, because there is not a number n which added to its sum of digits gives 7782899764.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 20699014 + ... + 20699389.

It is an arithmetic number, because the mean of its divisors is an integer number (1159155312).

Almost surely, 2^7782899764 is an apocalyptic number.

It is an amenable number.

7782899764 is a deficient number, since it is larger than the sum of its proper divisors (6126963980).

7782899764 is a wasteful number, since it uses less digits than its factorization.

7782899764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41398454 (or 41398452 counting only the distinct ones).

The product of its digits is 85349376, while the sum is 67.

The square root of 7782899764 is about 88220.7445219094. The cubic root of 7782899764 is about 1981.7421462415.

The spelling of 7782899764 in words is "seven billion, seven hundred eighty-two million, eight hundred ninety-nine thousand, seven hundred sixty-four".