257026103864 has 8 divisors (see below), whose sum is σ = 481923944760. Its totient is φ = 128513051928.

The previous prime is 257026103849. The next prime is 257026103897. The reversal of 257026103864 is 468301620752.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16064131484 + ... + 16064131499.

It is an arithmetic number, because the mean of its divisors is an integer number (60240493095).

Almost surely, 2^257026103864 is an apocalyptic number.

It is an amenable number.

257026103864 is a deficient number, since it is larger than the sum of its proper divisors (224897840896).

257026103864 is a wasteful number, since it uses less digits than its factorization.

257026103864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32128262989 (or 32128262985 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 44.

The spelling of 257026103864 in words is "two hundred fifty-seven billion, twenty-six million, one hundred three thousand, eight hundred sixty-four".