51111105050 has 48 divisors (see below), whose sum is σ = 97510297632. Its totient is φ = 19921204800.

The previous prime is 51111104981. The next prime is 51111105061. The reversal of 51111105050 is 5050111115.

It is a super-2 number, since 2×51111105050² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 876917 + ... + 933383.

It is an arithmetic number, because the mean of its divisors is an integer number (2031464534).

Almost surely, 2^51111105050 is an apocalyptic number.

51111105050 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51111105050 is a deficient number, since it is larger than the sum of its proper divisors (46399192582).

51111105050 is a wasteful number, since it uses less digits than its factorization.

51111105050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56943 (or 56938 counting only the distinct ones).

The product of its (nonzero) digits is 125, while the sum is 20.

Adding to 51111105050 its reverse (5050111115), we get a palindrome (56161216165).

The spelling of 51111105050 in words is "fifty-one billion, one hundred eleven million, one hundred five thousand, fifty".