257978119971 has 32 divisors (see below), whose sum is σ = 404142455808. Its totient is φ = 144310256640.

The previous prime is 257978119909. The next prime is 257978119999. The reversal of 257978119971 is 179911879752.

It is not a de Polignac number, because 257978119971 - 2¹⁸ = 257977857827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (257978119871) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6473910 + ... + 6513636.

It is an arithmetic number, because the mean of its divisors is an integer number (12629451744).

Almost surely, 2^257978119971 is an apocalyptic number.

257978119971 is a deficient number, since it is larger than the sum of its proper divisors (146164335837).

257978119971 is a wasteful number, since it uses less digits than its factorization.

257978119971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54891.

The product of its digits is 20003760, while the sum is 66.

The spelling of 257978119971 in words is "two hundred fifty-seven billion, nine hundred seventy-eight million, one hundred nineteen thousand, nine hundred seventy-one".