257644714070 has 32 divisors (see below), whose sum is σ = 484127243712. Its totient is φ = 98535703552.

The previous prime is 257644714049. The next prime is 257644714111. The reversal of 257644714070 is 70417446752.

It is a Curzon number.

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, 316334 + ... + 784446.

It is an arithmetic number, because the mean of its divisors is an integer number (15128976366).

Almost surely, 2^257644714070 is an apocalyptic number.

257644714070 is a deficient number, since it is larger than the sum of its proper divisors (226482529642).

257644714070 is a wasteful number, since it uses less digits than its factorization.

257644714070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470536.

The product of its (nonzero) digits is 1317120, while the sum is 47.

The spelling of 257644714070 in words is "two hundred fifty-seven billion, six hundred forty-four million, seven hundred fourteen thousand, seventy".