257315543741 has 16 divisors (see below), whose sum is σ = 271441674240. Its totient is φ = 243560323440.

The previous prime is 257315543731. The next prime is 257315543743. The reversal of 257315543741 is 147345513752.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-257315543741 is a prime.

It is a super-2 number, since 2×257315543741² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257315543743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2244680 + ... + 2356526.

It is an arithmetic number, because the mean of its divisors is an integer number (16965104640).

Almost surely, 2^257315543741 is an apocalyptic number.

It is an amenable number.

257315543741 is a deficient number, since it is larger than the sum of its proper divisors (14126130499).

257315543741 is a wasteful number, since it uses less digits than its factorization.

257315543741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113504.

The product of its digits is 1764000, while the sum is 47.

The spelling of 257315543741 in words is "two hundred fifty-seven billion, three hundred fifteen million, five hundred forty-three thousand, seven hundred forty-one".