257795045320 has 32 divisors (see below), whose sum is σ = 610567214400. Its totient is φ = 97690753728.

The previous prime is 257795045237. The next prime is 257795045341. The reversal of 257795045320 is 23540597752.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

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, 169601244 + ... + 169602763.

It is an arithmetic number, because the mean of its divisors is an integer number (19080225450).

Almost surely, 2^257795045320 is an apocalyptic number.

257795045320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

257795045320 is an abundant number, since it is smaller than the sum of its proper divisors (352772169080).

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

257795045320 is a wasteful number, since it uses less digits than its factorization.

257795045320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339204037 (or 339204033 counting only the distinct ones).

The product of its (nonzero) digits is 2646000, while the sum is 49.

The spelling of 257795045320 in words is "two hundred fifty-seven billion, seven hundred ninety-five million, forty-five thousand, three hundred twenty".