1240297774868 has 12 divisors (see below), whose sum is σ = 2170544667060. Its totient is φ = 620142155712.

The previous prime is 1240297774841. The next prime is 1240297774913. The reversal of 1240297774868 is 8684777920421.

It can be written as a sum of positive squares in 2 ways, for example, as 109588805764 + 1130708969104 = 331042^2 + 1063348^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1256363 + ... + 2014706.

It is an arithmetic number, because the mean of its divisors is an integer number (180878722255).

Almost surely, 2^{1240297774868} is an apocalyptic number.

It is an amenable number.

1240297774868 is a deficient number, since it is larger than the sum of its proper divisors (930246892192).

1240297774868 is a wasteful number, since it uses less digits than its factorization.

1240297774868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3365866 (or 3365864 counting only the distinct ones).

The product of its (nonzero) digits is 75866112, while the sum is 65.

The spelling of 1240297774868 in words is "one trillion, two hundred forty billion, two hundred ninety-seven million, seven hundred seventy-four thousand, eight hundred sixty-eight".