257302139205 has 8 divisors (see below), whose sum is σ = 411683422752. Its totient is φ = 137227807568.

The previous prime is 257302139183. The next prime is 257302139209. The reversal of 257302139205 is 502931203752.

257302139205 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 257302139205 - 2⁶ = 257302139141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257302139209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8576737959 + ... + 8576737988.

It is an arithmetic number, because the mean of its divisors is an integer number (51460427844).

Almost surely, 2^257302139205 is an apocalyptic number.

It is an amenable number.

257302139205 is a deficient number, since it is larger than the sum of its proper divisors (154381283547).

257302139205 is a wasteful number, since it uses less digits than its factorization.

257302139205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17153475955.

The product of its (nonzero) digits is 113400, while the sum is 39.

The spelling of 257302139205 in words is "two hundred fifty-seven billion, three hundred two million, one hundred thirty-nine thousand, two hundred five".