8077780703668 has 24 divisors (see below), whose sum is σ = 16119010365192. Its totient is φ = 3508900214784.

The previous prime is 8077780703659. The next prime is 8077780703677. The reversal of 8077780703668 is 8663070877708.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (8077780703659) and next prime (8077780703677).

It can be written as a sum of positive squares in 4 ways, for example, as 2210253102864 + 5867527600804 = 1486692^2 + 2422298^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4568879605 + ... + 4568881372.

It is an arithmetic number, because the mean of its divisors is an integer number (671625431883).

Almost surely, 2^{8077780703668} is an apocalyptic number.

It is an amenable number.

8077780703668 is a deficient number, since it is larger than the sum of its proper divisors (8041229661524).

8077780703668 is a wasteful number, since it uses less digits than its factorization.

8077780703668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9137761011 (or 9137761009 counting only the distinct ones).

The product of its (nonzero) digits is 132765696, while the sum is 67.

The spelling of 8077780703668 in words is "eight trillion, seventy-seven billion, seven hundred eighty million, seven hundred three thousand, six hundred sixty-eight".