2581530801233 has 4 divisors (see below), whose sum is σ = 2581534747188. Its totient is φ = 2581526855280.

The previous prime is 2581530801229. The next prime is 2581530801299. The reversal of 2581530801233 is 3321080351852.

2581530801233 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1352876049424 + 1228654751809 = 1163132^2 + 1108447^2 .

It is a cyclic number.

It is not a de Polignac number, because 2581530801233 - 2² = 2581530801229 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2581530801133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 731066 + ... + 2386947.

It is an arithmetic number, because the mean of its divisors is an integer number (645383686797).

Almost surely, 2^{2581530801233} is an apocalyptic number.

It is an amenable number.

2581530801233 is a deficient number, since it is larger than the sum of its proper divisors (3945955).

2581530801233 is an equidigital number, since it uses as much as digits as its factorization.

2581530801233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3945954.

The product of its (nonzero) digits is 172800, while the sum is 41.

The spelling of 2581530801233 in words is "two trillion, five hundred eighty-one billion, five hundred thirty million, eight hundred one thousand, two hundred thirty-three".