257464023881 has 16 divisors (see below), whose sum is σ = 282241800000. Its totient is φ = 233921854656.

The previous prime is 257464023841. The next prime is 257464023923. The reversal of 257464023881 is 188320464752.

It is a cyclic number.

It is not a de Polignac number, because 257464023881 - 2¹⁴ = 257464007497 is a prime.

It is a super-2 number, since 2×257464023881² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (257464023811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1485911 + ... + 1650108.

It is an arithmetic number, because the mean of its divisors is an integer number (17640112500).

Almost surely, 2^257464023881 is an apocalyptic number.

It is an amenable number.

257464023881 is a deficient number, since it is larger than the sum of its proper divisors (24777776119).

257464023881 is a wasteful number, since it uses less digits than its factorization.

257464023881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3136216.

The product of its (nonzero) digits is 2580480, while the sum is 50.

The spelling of 257464023881 in words is "two hundred fifty-seven billion, four hundred sixty-four million, twenty-three thousand, eight hundred eighty-one".