251335241053 has 16 divisors (see below), whose sum is σ = 270981665920. Its totient is φ = 231733721664.

The previous prime is 251335241041. The next prime is 251335241093. The reversal of 251335241053 is 350142533152.

It is a cyclic number.

It is not a de Polignac number, because 251335241053 - 2¹³ = 251335232861 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 (251335241093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77260975 + ... + 77264227.

It is an arithmetic number, because the mean of its divisors is an integer number (16936354120).

Almost surely, 2^251335241053 is an apocalyptic number.

It is an amenable number.

251335241053 is a deficient number, since it is larger than the sum of its proper divisors (19646424867).

251335241053 is a wasteful number, since it uses less digits than its factorization.

251335241053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8308.

The product of its (nonzero) digits is 54000, while the sum is 34.

The spelling of 251335241053 in words is "two hundred fifty-one billion, three hundred thirty-five million, two hundred forty-one thousand, fifty-three".