51203106143 has 4 divisors (see below), whose sum is σ = 58517835600. Its totient is φ = 43888376688.

The previous prime is 51203106113. The next prime is 51203106151. The reversal of 51203106143 is 34160130215.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34160130215 = 5 ⋅6832026043.

It is a cyclic number.

It is not a de Polignac number, because 51203106143 - 2¹² = 51203102047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51203106113) 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, 3657364718 + ... + 3657364731.

It is an arithmetic number, because the mean of its divisors is an integer number (14629458900).

Almost surely, 2^51203106143 is an apocalyptic number.

51203106143 is a deficient number, since it is larger than the sum of its proper divisors (7314729457).

51203106143 is an equidigital number, since it uses as much as digits as its factorization.

51203106143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7314729456.

The product of its (nonzero) digits is 2160, while the sum is 26.

Adding to 51203106143 its reverse (34160130215), we get a palindrome (85363236358).

The spelling of 51203106143 in words is "fifty-one billion, two hundred three million, one hundred six thousand, one hundred forty-three".