256299296033 has 12 divisors (see below), whose sum is σ = 281225115888. Its totient is φ = 231652245360.

The previous prime is 256299295999. The next prime is 256299296041. The reversal of 256299296033 is 330692992652.

It is not a de Polignac number, because 256299296033 - 2¹⁸ = 256299033889 is a prime.

It is a super-2 number, since 2×256299296033² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 256299296033.

It is not an unprimeable number, because it can be changed into a prime (256299296233) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60035 + ... + 718472.

It is an arithmetic number, because the mean of its divisors is an integer number (23435426324).

Almost surely, 2^256299296033 is an apocalyptic number.

It is an amenable number.

256299296033 is a deficient number, since it is larger than the sum of its proper divisors (24925819855).

256299296033 is an equidigital number, since it uses as much as digits as its factorization.

256299296033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778864 (or 778691 counting only the distinct ones).

The product of its (nonzero) digits is 9447840, while the sum is 56.

The spelling of 256299296033 in words is "two hundred fifty-six billion, two hundred ninety-nine million, two hundred ninety-six thousand, thirty-three".