51105501011050 has 12 divisors (see below), whose sum is σ = 95056231880646. Its totient is φ = 20442200404400.

The previous prime is 51105501011041. The next prime is 51105501011053. The reversal of 51105501011050 is 5011010550115.

It can be written as a sum of positive squares in 3 ways, for example, as 24621910430209 + 26483590580841 = 4962047^2 + 5146221^2 .

It is a super-2 number, since 2×51105501011050² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (51105501011053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 511055010061 + ... + 511055010160.

Almost surely, 2^{51105501011050} is an apocalyptic number.

51105501011050 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51105501011050 is a deficient number, since it is larger than the sum of its proper divisors (43950730869596).

51105501011050 is a wasteful number, since it uses less digits than its factorization.

51105501011050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1022110020233 (or 1022110020228 counting only the distinct ones).

The product of its (nonzero) digits is 625, while the sum is 25.

Adding to 51105501011050 its reverse (5011010550115), we get a palindrome (56116511561165).

The spelling of 51105501011050 in words is "fifty-one trillion, one hundred five billion, five hundred one million, eleven thousand, fifty".