51051105100 has 18 divisors (see below), whose sum is σ = 110780898284. Its totient is φ = 20420442000.

The previous prime is 51051105097. The next prime is 51051105101. The reversal of 51051105100 is 150115015.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (51051105101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 255255426 + ... + 255255625.

Almost surely, 2^51051105100 is an apocalyptic number.

51051105100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51051105100 is an abundant number, since it is smaller than the sum of its proper divisors (59729793184).

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

51051105100 is a wasteful number, since it uses less digits than its factorization.

51051105100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510511065 (or 510511058 counting only the distinct ones).

The product of its (nonzero) digits is 125, while the sum is 19.

The spelling of 51051105100 in words is "fifty-one billion, fifty-one million, one hundred five thousand, one hundred".