257203024049 has 16 divisors (see below), whose sum is σ = 269192851200. Its totient is φ = 245489811840.

The previous prime is 257203024031. The next prime is 257203024063. The reversal of 257203024049 is 940420302752.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-257203024049 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (257203024009) 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, 4885742 + ... + 4938104.

It is an arithmetic number, because the mean of its divisors is an integer number (16824553200).

Almost surely, 2^257203024049 is an apocalyptic number.

It is an amenable number.

257203024049 is a deficient number, since it is larger than the sum of its proper divisors (11989827151).

257203024049 is a wasteful number, since it uses less digits than its factorization.

257203024049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55000.

The product of its (nonzero) digits is 120960, while the sum is 38.

The spelling of 257203024049 in words is "two hundred fifty-seven billion, two hundred three million, twenty-four thousand, forty-nine".