51253205143 has 4 divisors (see below), whose sum is σ = 58575091600. Its totient is φ = 43931318688.

The previous prime is 51253205057. The next prime is 51253205153. The reversal of 51253205143 is 34150235215.

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

It is a cyclic number.

It is not a de Polignac number, because 51253205143 - 2⁹ = 51253204631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51253205153) 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, 3660943218 + ... + 3660943231.

It is an arithmetic number, because the mean of its divisors is an integer number (14643772900).

Almost surely, 2^51253205143 is an apocalyptic number.

51253205143 is a deficient number, since it is larger than the sum of its proper divisors (7321886457).

51253205143 is an equidigital number, since it uses as much as digits as its factorization.

51253205143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7321886456.

The product of its (nonzero) digits is 18000, while the sum is 31.

The spelling of 51253205143 in words is "fifty-one billion, two hundred fifty-three million, two hundred five thousand, one hundred forty-three".