51578084143 has 4 divisors (see below), whose sum is σ = 52423626568. Its totient is φ = 50732541720.

The previous prime is 51578084113. The next prime is 51578084161. The reversal of 51578084143 is 34148087515.

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 51578084143 - 2²⁵ = 51544529711 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51578084093 and 51578084102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51578084113) 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, 422771121 + ... + 422771242.

It is an arithmetic number, because the mean of its divisors is an integer number (13105906642).

Almost surely, 2^51578084143 is an apocalyptic number.

51578084143 is a deficient number, since it is larger than the sum of its proper divisors (845542425).

51578084143 is an equidigital number, since it uses as much as digits as its factorization.

51578084143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845542424.

The product of its (nonzero) digits is 537600, while the sum is 46.

The spelling of 51578084143 in words is "fifty-one billion, five hundred seventy-eight million, eighty-four thousand, one hundred forty-three".