257978119972 has 24 divisors (see below), whose sum is σ = 483277485600. Its totient is φ = 120128970816.

The previous prime is 257978119909. The next prime is 257978119999. The reversal of 257978119972 is 279911879752.

It is a junction number, because it is equal to n+sod(n) for n = 257978119898 and 257978119907.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28762033 + ... + 28771000.

It is an arithmetic number, because the mean of its divisors is an integer number (20136561900).

Almost surely, 2^257978119972 is an apocalyptic number.

It is an amenable number.

257978119972 is a deficient number, since it is larger than the sum of its proper divisors (225299365628).

257978119972 is a wasteful number, since it uses less digits than its factorization.

257978119972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57533115 (or 57533113 counting only the distinct ones).

The product of its digits is 40007520, while the sum is 67.

The spelling of 257978119972 in words is "two hundred fifty-seven billion, nine hundred seventy-eight million, one hundred nineteen thousand, nine hundred seventy-two".