257163926403 has 32 divisors (see below), whose sum is σ = 352675249920. Its totient is φ = 166617722880.

The previous prime is 257163926401. The next prime is 257163926407. The reversal of 257163926403 is 304629361752.

It is not a de Polignac number, because 257163926403 - 2¹ = 257163926401 is a prime.

It is a super-2 number, since 2×257163926403² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (257163926401) 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, 16766448 + ... + 16781778.

It is an arithmetic number, because the mean of its divisors is an integer number (11021101560).

Almost surely, 2^257163926403 is an apocalyptic number.

257163926403 is a deficient number, since it is larger than the sum of its proper divisors (95511323517).

257163926403 is a wasteful number, since it uses less digits than its factorization.

257163926403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16467.

The product of its (nonzero) digits is 1632960, while the sum is 48.

The spelling of 257163926403 in words is "two hundred fifty-seven billion, one hundred sixty-three million, nine hundred twenty-six thousand, four hundred three".