7813268766 has 12 divisors (see below), whose sum is σ = 16928749032. Its totient is φ = 2604422916.

The previous prime is 7813268759. The next prime is 7813268779. The reversal of 7813268766 is 6678623187.

It is a super-2 number, since 2×7813268766² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 217035226 + ... + 217035261.

It is an arithmetic number, because the mean of its divisors is an integer number (1410729086).

Almost surely, 2^7813268766 is an apocalyptic number.

7813268766 is an abundant number, since it is smaller than the sum of its proper divisors (9115480266).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7813268766 is a wasteful number, since it uses less digits than its factorization.

7813268766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434070495 (or 434070492 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 54.

The square root of 7813268766 is about 88392.6963385550. The cubic root of 7813268766 is about 1984.3163976233.

The spelling of 7813268766 in words is "seven billion, eight hundred thirteen million, two hundred sixty-eight thousand, seven hundred sixty-six".