257887397053 has 8 divisors (see below), whose sum is σ = 302972606496. Its totient is φ = 216409004400.

The previous prime is 257887397051. The next prime is 257887397071. The reversal of 257887397053 is 350793788752.

257887397053 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 257887397053 - 2¹ = 257887397051 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257887397051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 901704043 + ... + 901704328.

It is an arithmetic number, because the mean of its divisors is an integer number (37871575812).

Almost surely, 2^257887397053 is an apocalyptic number.

It is an amenable number.

257887397053 is a deficient number, since it is larger than the sum of its proper divisors (45085209443).

257887397053 is a wasteful number, since it uses less digits than its factorization.

257887397053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1803408395.

The product of its (nonzero) digits is 88905600, while the sum is 64.

It can be divided in two parts, 257887 and 397053, that added together give a triangular number (654940 = T₁₁₄₄).

The spelling of 257887397053 in words is "two hundred fifty-seven billion, eight hundred eighty-seven million, three hundred ninety-seven thousand, fifty-three".