257370066672 has 20 divisors (see below), whose sum is σ = 664872672360. Its totient is φ = 85790022208.

The previous prime is 257370066661. The next prime is 257370066673. The reversal of 257370066672 is 276660073752.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257370066673) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2680938147 + ... + 2680938242.

It is an arithmetic number, because the mean of its divisors is an integer number (33243633618).

Almost surely, 2^257370066672 is an apocalyptic number.

It is an amenable number.

257370066672 is an abundant number, since it is smaller than the sum of its proper divisors (407502605688).

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

257370066672 is a wasteful number, since it uses less digits than its factorization.

257370066672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5361876400 (or 5361876394 counting only the distinct ones).

The product of its (nonzero) digits is 4445280, while the sum is 51.

The spelling of 257370066672 in words is "two hundred fifty-seven billion, three hundred seventy million, sixty-six thousand, six hundred seventy-two".