257643268962 has 16 divisors (see below), whose sum is σ = 525008926080. Its totient is φ = 84260691632.

The previous prime is 257643268943. The next prime is 257643268979. The reversal of 257643268962 is 269862346752.

It is a junction number, because it is equal to n+sod(n) for n = 257643268896 and 257643268905.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 405099162 + ... + 405099797.

It is an arithmetic number, because the mean of its divisors is an integer number (32813057880).

Almost surely, 2^257643268962 is an apocalyptic number.

257643268962 is an abundant number, since it is smaller than the sum of its proper divisors (267365657118).

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

257643268962 is a wasteful number, since it uses less digits than its factorization.

257643268962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810199017.

The product of its digits is 52254720, while the sum is 60.

The spelling of 257643268962 in words is "two hundred fifty-seven billion, six hundred forty-three million, two hundred sixty-eight thousand, nine hundred sixty-two".