257115727213111 has 16 divisors (see below), whose sum is σ = 283194459813888. Its totient is φ = 231951696040800.

The previous prime is 257115727213061. The next prime is 257115727213123. The reversal of 257115727213111 is 111312727511752.

It is a cyclic number.

It is not a de Polignac number, because 257115727213111 - 2¹⁵ = 257115727180343 is a prime.

It is a super-2 number, since 2×257115727213111² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257115727214111) 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, 304072255 + ... + 304916656.

It is an arithmetic number, because the mean of its divisors is an integer number (17699653738368).

Almost surely, 2^{257115727213111} is an apocalyptic number.

257115727213111 is a deficient number, since it is larger than the sum of its proper divisors (26078732600777).

257115727213111 is a wasteful number, since it uses less digits than its factorization.

257115727213111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608989662.

The product of its digits is 205800, while the sum is 46.

The spelling of 257115727213111 in words is "two hundred fifty-seven trillion, one hundred fifteen billion, seven hundred twenty-seven million, two hundred thirteen thousand, one hundred eleven".