257355715545042 has 8 divisors (see below), whose sum is σ = 514711431090096. Its totient is φ = 85785238515012.

The previous prime is 257355715545037. The next prime is 257355715545053. The reversal of 257355715545042 is 240545517553752.

It is a sphenic number, since it is the product of 3 distinct primes.

257355715545042 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21446309628748 + ... + 21446309628759.

It is an arithmetic number, because the mean of its divisors is an integer number (64338928886262).

Almost surely, 2^{257355715545042} is an apocalyptic number.

257355715545042 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

257355715545042 is a wasteful number, since it uses less digits than its factorization.

257355715545042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42892619257512.

The product of its (nonzero) digits is 147000000, while the sum is 60.

The spelling of 257355715545042 in words is "two hundred fifty-seven trillion, three hundred fifty-five billion, seven hundred fifteen million, five hundred forty-five thousand, forty-two".