257478060403 has 32 divisors (see below), whose sum is σ = 283144680000. Its totient is φ = 233049083904.

The previous prime is 257478060401. The next prime is 257478060409. The reversal of 257478060403 is 304060874752.

It is a cyclic number.

It is not a de Polignac number, because 257478060403 - 2¹ = 257478060401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (257478060401) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 230508001 + ... + 230509117.

It is an arithmetic number, because the mean of its divisors is an integer number (8848271250).

Almost surely, 2^257478060403 is an apocalyptic number.

257478060403 is a deficient number, since it is larger than the sum of its proper divisors (25666619597).

257478060403 is a wasteful number, since it uses less digits than its factorization.

257478060403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2599.

The product of its (nonzero) digits is 1128960, while the sum is 46.

The spelling of 257478060403 in words is "two hundred fifty-seven billion, four hundred seventy-eight million, sixty thousand, four hundred three".