51000143043 has 4 divisors (see below), whose sum is σ = 68000190728. Its totient is φ = 34000095360.

The previous prime is 51000143041. The next prime is 51000143107. The reversal of 51000143043 is 34034100015.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 51000143043 - 2¹ = 51000143041 is a prime.

It is a super-2 number, since 2×51000143043² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51000143041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8500023838 + ... + 8500023843.

It is an arithmetic number, because the mean of its divisors is an integer number (17000047682).

Almost surely, 2^51000143043 is an apocalyptic number.

51000143043 is a deficient number, since it is larger than the sum of its proper divisors (17000047685).

51000143043 is a wasteful number, since it uses less digits than its factorization.

51000143043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17000047684.

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 51000143043 its reverse (34034100015), we get a palindrome (85034243058).

The spelling of 51000143043 in words is "fifty-one billion, one hundred forty-three thousand, forty-three".