51643834615 has 8 divisors (see below), whose sum is σ = 61979473008. Its totient is φ = 41310486720.

The previous prime is 51643834603. The next prime is 51643834631.

51643834615 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51643834615 - 2⁹ = 51643834103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 522622 + ... + 613531.

It is an arithmetic number, because the mean of its divisors is an integer number (7747434126).

Almost surely, 2^51643834615 is an apocalyptic number.

51643834615 is a deficient number, since it is larger than the sum of its proper divisors (10335638393).

51643834615 is a wasteful number, since it uses less digits than its factorization.

51643834615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1145249.

The product of its digits is 1036800, while the sum is 46.

The spelling of 51643834615 in words is "fifty-one billion, six hundred forty-three million, eight hundred thirty-four thousand, six hundred fifteen".