268684763740 has 24 divisors (see below), whose sum is σ = 564308529120. Its totient is φ = 107460472128.

The previous prime is 268684763731. The next prime is 268684763741. The reversal of 268684763740 is 47367486862.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268684763741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 674787 + ... + 996346.

It is an arithmetic number, because the mean of its divisors is an integer number (23512855380).

Almost surely, 2^268684763740 is an apocalyptic number.

268684763740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

268684763740 is an abundant number, since it is smaller than the sum of its proper divisors (295623765380).

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

268684763740 is a wasteful number, since it uses less digits than its factorization.

268684763740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1679181 (or 1679179 counting only the distinct ones).

The product of its (nonzero) digits is 65028096, while the sum is 61.

The spelling of 268684763740 in words is "two hundred sixty-eight billion, six hundred eighty-four million, seven hundred sixty-three thousand, seven hundred forty".