251143884069 has 16 divisors (see below), whose sum is σ = 363249106752. Its totient is φ = 153421976448.

The previous prime is 251143884007. The next prime is 251143884071. The reversal of 251143884069 is 960488341152.

It is not a de Polignac number, because 251143884069 - 2³¹ = 248996400421 is a prime.

It is a super-3 number, since 3×251143884069³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251143884769) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23496799 + ... + 23507484.

It is an arithmetic number, because the mean of its divisors is an integer number (22703069172).

Almost surely, 2^251143884069 is an apocalyptic number.

It is an amenable number.

251143884069 is a deficient number, since it is larger than the sum of its proper divisors (112105222683).

251143884069 is a wasteful number, since it uses less digits than its factorization.

251143884069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47004436.

The product of its (nonzero) digits is 1658880, while the sum is 51.

The spelling of 251143884069 in words is "two hundred fifty-one billion, one hundred forty-three million, eight hundred eighty-four thousand, sixty-nine".