257061155313 has 8 divisors (see below), whose sum is σ = 344219230368. Its totient is φ = 170638591904.

The previous prime is 257061155303. The next prime is 257061155339. The reversal of 257061155313 is 313551160752.

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 257061155313 - 2⁶ = 257061155249 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (257061155303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183877095 + ... + 183878492.

It is an arithmetic number, because the mean of its divisors is an integer number (43027403796).

Almost surely, 2^257061155313 is an apocalyptic number.

It is an amenable number.

257061155313 is a deficient number, since it is larger than the sum of its proper divisors (87158075055).

257061155313 is a wasteful number, since it uses less digits than its factorization.

257061155313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367755823.

The product of its (nonzero) digits is 94500, while the sum is 39.

The spelling of 257061155313 in words is "two hundred fifty-seven billion, sixty-one million, one hundred fifty-five thousand, three hundred thirteen".