251211033551132 has 12 divisors (see below), whose sum is σ = 439782796761840. Its totient is φ = 125558805904896.

The previous prime is 251211033551117. The next prime is 251211033551161. The reversal of 251211033551132 is 231155330112152.

It is a junction number, because it is equal to n+sod(n) for n = 251211033551092 and 251211033551101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11677705568 + ... + 11677727079.

It is an arithmetic number, because the mean of its divisors is an integer number (36648566396820).

Almost surely, 2^{251211033551132} is an apocalyptic number.

It is an amenable number.

251211033551132 is a deficient number, since it is larger than the sum of its proper divisors (188571763210708).

251211033551132 is a wasteful number, since it uses less digits than its factorization.

251211033551132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23355435340 (or 23355435338 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 35.

Adding to 251211033551132 its reverse (231155330112152), we get a palindrome (482366363663284).

The spelling of 251211033551132 in words is "two hundred fifty-one trillion, two hundred eleven billion, thirty-three million, five hundred fifty-one thousand, one hundred thirty-two".