257372802933 has 4 divisors (see below), whose sum is σ = 343163737248. Its totient is φ = 171581868620.

The previous prime is 257372802919. The next prime is 257372802971. The reversal of 257372802933 is 339208273752.

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 a de Polignac number, because none of the positive numbers 2^k-257372802933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257372802233) 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, 42895467153 + ... + 42895467158.

It is an arithmetic number, because the mean of its divisors is an integer number (85790934312).

Almost surely, 2^257372802933 is an apocalyptic number.

It is an amenable number.

257372802933 is a deficient number, since it is larger than the sum of its proper divisors (85790934315).

257372802933 is an equidigital number, since it uses as much as digits as its factorization.

257372802933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85790934314.

The product of its (nonzero) digits is 3810240, while the sum is 51.

The spelling of 257372802933 in words is "two hundred fifty-seven billion, three hundred seventy-two million, eight hundred two thousand, nine hundred thirty-three".