51110011100100 has 72 divisors (see below), whose sum is σ = 148024280214720. Its totient is φ = 13615881783680.

The previous prime is 51110011100089. The next prime is 51110011100117. The reversal of 51110011100100 is 100111001115.

It is a happy number.

It is a super-2 number, since 2×51110011100100² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 83786280 + ... + 84394079.

It is an arithmetic number, because the mean of its divisors is an integer number (2055892780760).

Almost surely, 2^{51110011100100} is an apocalyptic number.

51110011100100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51110011100100 is an abundant number, since it is smaller than the sum of its proper divisors (96914269114620).

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

51110011100100 is a wasteful number, since it uses less digits than its factorization.

51110011100100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168181389 (or 168181382 counting only the distinct ones).

The product of its (nonzero) digits is 5, while the sum is 12.

Adding to 51110011100100 its reverse (100111001115), we get a palindrome (51210122101215).

The spelling of 51110011100100 in words is "fifty-one trillion, one hundred ten billion, eleven million, one hundred thousand, one hundred".