51636063615 has 8 divisors (see below), whose sum is σ = 82617701808. Its totient is φ = 27539233920.

The previous prime is 51636063581. The next prime is 51636063623.

51636063615 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 51636063615 - 2¹¹ = 51636061567 is a prime.

It is a super-4 number, since 4×51636063615⁴ (a number of 44 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1721202106 + ... + 1721202135.

It is an arithmetic number, because the mean of its divisors is an integer number (10327212726).

Almost surely, 2^51636063615 is an apocalyptic number.

51636063615 is a deficient number, since it is larger than the sum of its proper divisors (30981638193).

51636063615 is a wasteful number, since it uses less digits than its factorization.

51636063615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3442404249.

The product of its (nonzero) digits is 291600, while the sum is 42.

It can be divided in two parts, 516360 and 63615, that added together give a palindrome (579975).

The spelling of 51636063615 in words is "fifty-one billion, six hundred thirty-six million, sixty-three thousand, six hundred fifteen".