257973949452 has 12 divisors (see below), whose sum is σ = 601939215416. Its totient is φ = 85991316480.

The previous prime is 257973949403. The next prime is 257973949543. The reversal of 257973949452 is 254949379752.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×257973949452² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10748914549 + ... + 10748914572.

Almost surely, 2^257973949452 is an apocalyptic number.

It is an amenable number.

257973949452 is an abundant number, since it is smaller than the sum of its proper divisors (343965265964).

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

257973949452 is a wasteful number, since it uses less digits than its factorization.

257973949452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21497829128 (or 21497829126 counting only the distinct ones).

The product of its digits is 171460800, while the sum is 66.

The spelling of 257973949452 in words is "two hundred fifty-seven billion, nine hundred seventy-three million, nine hundred forty-nine thousand, four hundred fifty-two".