251043402401200 has 60 divisors (see below), whose sum is σ = 603835546125240. Its totient is φ = 100300187706880.

The previous prime is 251043402401191. The next prime is 251043402401263. The reversal of 251043402401200 is 2104204340152.

It is a super-2 number, since 2×251043402401200² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 365823190 + ... + 366508789.

It is an arithmetic number, because the mean of its divisors is an integer number (10063925768754).

Almost surely, 2^{251043402401200} is an apocalyptic number.

251043402401200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

251043402401200 is an abundant number, since it is smaller than the sum of its proper divisors (352792143724040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

251043402401200 is a wasteful number, since it uses less digits than its factorization.

251043402401200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732332854 (or 732332843 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 251043402401200 its reverse (2104204340152), we get a palindrome (253147606741352).

The spelling of 251043402401200 in words is "two hundred fifty-one trillion, forty-three billion, four hundred two million, four hundred one thousand, two hundred".