257240344000766 has 32 divisors (see below), whose sum is σ = 471379972912128. Its totient is φ = 102880549632960.

The previous prime is 257240344000733. The next prime is 257240344000793. The reversal of 257240344000766 is 667000443042752.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9742463090 + ... + 9742489493.

It is an arithmetic number, because the mean of its divisors is an integer number (14730624153504).

Almost surely, 2^{257240344000766} is an apocalyptic number.

257240344000766 is a deficient number, since it is larger than the sum of its proper divisors (214139628911362).

257240344000766 is a wasteful number, since it uses less digits than its factorization.

257240344000766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19484952656.

The product of its (nonzero) digits is 6773760, while the sum is 50.

The spelling of 257240344000766 in words is "two hundred fifty-seven trillion, two hundred forty billion, three hundred forty-four million, seven hundred sixty-six", and thus it is an aban number.