257140122445 has 16 divisors (see below), whose sum is σ = 331719402240. Its totient is φ = 190738649664.

The previous prime is 257140122439. The next prime is 257140122457. The reversal of 257140122445 is 544221041752.

It is a cyclic number.

It is not a de Polignac number, because 257140122445 - 2²⁷ = 257005904717 is a prime.

It is a super-2 number, since 2×257140122445² (a number of 24 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 15 ways as a sum of consecutive naturals, for example, 28790622 + ... + 28799551.

It is an arithmetic number, because the mean of its divisors is an integer number (20732462640).

Almost surely, 2^257140122445 is an apocalyptic number.

It is an amenable number.

257140122445 is a deficient number, since it is larger than the sum of its proper divisors (74579279795).

257140122445 is a wasteful number, since it uses less digits than its factorization.

257140122445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57590244.

The product of its (nonzero) digits is 89600, while the sum is 37.

The spelling of 257140122445 in words is "two hundred fifty-seven billion, one hundred forty million, one hundred twenty-two thousand, four hundred forty-five".