268780933812680 has 32 divisors (see below), whose sum is σ = 604759604484600. Its totient is φ = 107511928475136.

The previous prime is 268780933812617. The next prime is 268780933812731. The reversal of 268780933812680 is 86218339087862.

It can be written as a sum of positive squares in 4 ways, for example, as 141407724684004 + 127373209128676 = 11891498^2 + 11285974^2 .

It is a Smith number, since the sum of its digits (71) coincides with the sum of the digits of its prime factors.

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, 4037597 + ... + 23534316.

Almost surely, 2^{268780933812680} is an apocalyptic number.

268780933812680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

268780933812680 is an abundant number, since it is smaller than the sum of its proper divisors (335978670671920).

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

268780933812680 is a wasteful number, since it uses less digits than its factorization.

268780933812680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27815633 (or 27815629 counting only the distinct ones).

The product of its (nonzero) digits is 334430208, while the sum is 71.

The spelling of 268780933812680 in words is "two hundred sixty-eight trillion, seven hundred eighty billion, nine hundred thirty-three million, eight hundred twelve thousand, six hundred eighty".