51105131142 has 16 divisors (see below), whose sum is σ = 110072590320. Its totient is φ = 15724655712.

The previous prime is 51105131137. The next prime is 51105131183. The reversal of 51105131142 is 24113150115.

51105131142 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×51105131142² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 327596917 + ... + 327597072.

It is an arithmetic number, because the mean of its divisors is an integer number (6879536895).

Almost surely, 2^51105131142 is an apocalyptic number.

51105131142 is an abundant number, since it is smaller than the sum of its proper divisors (58967459178).

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

51105131142 is a wasteful number, since it uses less digits than its factorization.

51105131142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655194007.

The product of its (nonzero) digits is 600, while the sum is 24.

Adding to 51105131142 its reverse (24113150115), we get a palindrome (75218281257).

The spelling of 51105131142 in words is "fifty-one billion, one hundred five million, one hundred thirty-one thousand, one hundred forty-two".