51143123254 has 4 divisors (see below), whose sum is σ = 76714684884. Its totient is φ = 25571561626.

The previous prime is 51143123203. The next prime is 51143123261. The reversal of 51143123254 is 45232134115.

51143123254 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12785780812 + ... + 12785780815.

It is an arithmetic number, because the mean of its divisors is an integer number (19178671221).

Almost surely, 2^51143123254 is an apocalyptic number.

51143123254 is a deficient number, since it is larger than the sum of its proper divisors (25571561630).

51143123254 is a wasteful number, since it uses less digits than its factorization.

51143123254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25571561629.

The product of its digits is 14400, while the sum is 31.

Adding to 51143123254 its reverse (45232134115), we get a palindrome (96375257369).

The spelling of 51143123254 in words is "fifty-one billion, one hundred forty-three million, one hundred twenty-three thousand, two hundred fifty-four".