257247351111 has 8 divisors (see below), whose sum is σ = 361048913920. Its totient is φ = 162472011192.

The previous prime is 257247351079. The next prime is 257247351133. The reversal of 257247351111 is 111153742752.

257247351111 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 not a de Polignac number, because 257247351111 - 2⁵ = 257247351079 is a prime.

It is a super-2 number, since 2×257247351111² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 257247351111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257247331111) 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, 2256555655 + ... + 2256555768.

It is an arithmetic number, because the mean of its divisors is an integer number (45131114240).

Almost surely, 2^257247351111 is an apocalyptic number.

257247351111 is a deficient number, since it is larger than the sum of its proper divisors (103801562809).

257247351111 is a wasteful number, since it uses less digits than its factorization.

257247351111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4513111445.

The product of its digits is 58800, while the sum is 39.

The spelling of 257247351111 in words is "two hundred fifty-seven billion, two hundred forty-seven million, three hundred fifty-one thousand, one hundred eleven".