768868779402 has 24 divisors (see below), whose sum is σ = 1666603918980. Its totient is φ = 256178583360.

The previous prime is 768868779383. The next prime is 768868779463. The reversal of 768868779402 is 204977868867.

768868779402 is a `hidden beast` number, since 7 + 68 + 86 + 87 + 7 + 9 + 402 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 764052558201 + 4816221201 = 874101^2 + 69399^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9208099 + ... + 9291222.

Almost surely, 2^768868779402 is an apocalyptic number.

768868779402 is an abundant number, since it is smaller than the sum of its proper divisors (897735139578).

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

768868779402 is a wasteful number, since it uses less digits than its factorization.

768868779402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18501638 (or 18501635 counting only the distinct ones).

The product of its (nonzero) digits is 455196672, while the sum is 72.

The spelling of 768868779402 in words is "seven hundred sixty-eight billion, eight hundred sixty-eight million, seven hundred seventy-nine thousand, four hundred two".