257783234442 has 16 divisors (see below), whose sum is σ = 528141261312. Its totient is φ = 83831946080.

The previous prime is 257783234419. The next prime is 257783234461. The reversal of 257783234442 is 244432387752.

257783234442 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 523949418 + ... + 523949909.

It is an arithmetic number, because the mean of its divisors is an integer number (33008828832).

Almost surely, 2^257783234442 is an apocalyptic number.

257783234442 is an abundant number, since it is smaller than the sum of its proper divisors (270358026870).

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

257783234442 is a wasteful number, since it uses less digits than its factorization.

257783234442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1047899373.

The product of its digits is 9031680, while the sum is 51.

The spelling of 257783234442 in words is "two hundred fifty-seven billion, seven hundred eighty-three million, two hundred thirty-four thousand, four hundred forty-two".