251342231453 has 4 divisors (see below), whose sum is σ = 252730862748. Its totient is φ = 249953600160.

The previous prime is 251342231447. The next prime is 251342231467. The reversal of 251342231453 is 354132243152.

251342231453 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 6533003929 + 244809227524 = 80827^2 + 494782^2 .

It is a cyclic number.

It is not a de Polignac number, because 251342231453 - 2¹⁰ = 251342230429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251342231423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 694315376 + ... + 694315737.

It is an arithmetic number, because the mean of its divisors is an integer number (63182715687).

Almost surely, 2^251342231453 is an apocalyptic number.

It is an amenable number.

251342231453 is a deficient number, since it is larger than the sum of its proper divisors (1388631295).

251342231453 is a wasteful number, since it uses less digits than its factorization.

251342231453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1388631294.

The product of its digits is 86400, while the sum is 35.

The spelling of 251342231453 in words is "two hundred fifty-one billion, three hundred forty-two million, two hundred thirty-one thousand, four hundred fifty-three".