257207711753 has 4 divisors (see below), whose sum is σ = 270744959760. Its totient is φ = 243670463748.

The previous prime is 257207711741. The next prime is 257207711759. The reversal of 257207711753 is 357117702752.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 257207711753 - 2⁴ = 257207711737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 257207711698 and 257207711707.

It is not an unprimeable number, because it can be changed into a prime (257207711759) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6768623975 + ... + 6768624012.

It is an arithmetic number, because the mean of its divisors is an integer number (67686239940).

Almost surely, 2^257207711753 is an apocalyptic number.

It is an amenable number.

257207711753 is a deficient number, since it is larger than the sum of its proper divisors (13537248007).

257207711753 is a wasteful number, since it uses less digits than its factorization.

257207711753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13537248006.

The product of its (nonzero) digits is 720300, while the sum is 47.

Subtracting 257207711753 from its reverse (357117702752), we obtain a palindrome (99909990999).

The spelling of 257207711753 in words is "two hundred fifty-seven billion, two hundred seven million, seven hundred eleven thousand, seven hundred fifty-three".