257127079860 has 96 divisors (see below), whose sum is σ = 914229630720. Its totient is φ = 58771903104.

The previous prime is 257127079849. The next prime is 257127079897. The reversal of 257127079860 is 68970721752.

It is a happy number.

257127079860 is a `hidden beast` number, since 2 + 571 + 2 + 7 + 0 + 7 + 9 + 8 + 60 = 666.

It is a super-2 number, since 2×257127079860² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 257127079797 and 257127079806.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34007739 + ... + 34015298.

It is an arithmetic number, because the mean of its divisors is an integer number (9523225320).

Almost surely, 2^257127079860 is an apocalyptic number.

257127079860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

257127079860 is an abundant number, since it is smaller than the sum of its proper divisors (657102550860).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

257127079860 is a wasteful number, since it uses less digits than its factorization.

257127079860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68023062 (or 68023054 counting only the distinct ones).

The product of its (nonzero) digits is 2963520, while the sum is 54.

The spelling of 257127079860 in words is "two hundred fifty-seven billion, one hundred twenty-seven million, seventy-nine thousand, eight hundred sixty".