257237700007828 has 12 divisors (see below), whose sum is σ = 450213556305492. Its totient is φ = 128605255349120.

The previous prime is 257237700007787. The next prime is 257237700007831. The reversal of 257237700007828 is 828700007732752.

It can be written as a sum of positive squares in 2 ways, for example, as 111293469383184 + 145944230624644 = 10549572^2 + 12080738^2 .

It is a super-2 number, since 2×257237700007828² (a number of 30 digits) contains 22 as substring.

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, 3398621125 + ... + 3398696812.

It is an arithmetic number, because the mean of its divisors is an integer number (37517796358791).

Almost surely, 2^{257237700007828} is an apocalyptic number.

It is an amenable number.

257237700007828 is a deficient number, since it is larger than the sum of its proper divisors (192975856297664).

257237700007828 is a wasteful number, since it uses less digits than its factorization.

257237700007828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6797327402 (or 6797327400 counting only the distinct ones).

The product of its (nonzero) digits is 18439680, while the sum is 58.

The spelling of 257237700007828 in words is "two hundred fifty-seven trillion, two hundred thirty-seven billion, seven hundred million, seven thousand, eight hundred twenty-eight".