51006105505500 has 48 divisors (see below), whose sum is σ = 148529779236384. Its totient is φ = 13601628134400.

The previous prime is 51006105505447. The next prime is 51006105505501. The reversal of 51006105505500 is 550550160015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51006105505501) 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, 17002033669 + ... + 17002036668.

It is an arithmetic number, because the mean of its divisors is an integer number (3094370400758).

Almost surely, 2^{51006105505500} is an apocalyptic number.

51006105505500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51006105505500 is an abundant number, since it is smaller than the sum of its proper divisors (97523673730884).

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

51006105505500 is a wasteful number, since it uses less digits than its factorization.

51006105505500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34004070359 (or 34004070347 counting only the distinct ones).

The product of its (nonzero) digits is 18750, while the sum is 33.

Adding to 51006105505500 its reverse (550550160015), we get a palindrome (51556655665515).

The spelling of 51006105505500 in words is "fifty-one trillion, six billion, one hundred five million, five hundred five thousand, five hundred".