251230411045 has 8 divisors (see below), whose sum is σ = 301479403896. Its totient is φ = 200982388416.

The previous prime is 251230411039. The next prime is 251230411139. The reversal of 251230411045 is 540114032152.

It can be written as a sum of positive squares in 4 ways, for example, as 96219697249 + 155010713796 = 310193^2 + 393714^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 251230411045 - 2³ = 251230411037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 581859 + ... + 917071.

It is an arithmetic number, because the mean of its divisors is an integer number (37684925487).

Almost surely, 2^251230411045 is an apocalyptic number.

It is an amenable number.

251230411045 is a deficient number, since it is larger than the sum of its proper divisors (50248992851).

251230411045 is a wasteful number, since it uses less digits than its factorization.

251230411045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485111.

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 251230411045 its reverse (540114032152), we get a palindrome (791344443197).

The spelling of 251230411045 in words is "two hundred fifty-one billion, two hundred thirty million, four hundred eleven thousand, forty-five".