51036664678 has 8 divisors (see below), whose sum is σ = 76745908440. Its totient is φ = 25454695200.

The previous prime is 51036664667. The next prime is 51036664727. The reversal of 51036664678 is 87646663015.

51036664678 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×51036664678² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31817568 + ... + 31819171.

It is an arithmetic number, because the mean of its divisors is an integer number (9593238555).

Almost surely, 2^51036664678 is an apocalyptic number.

51036664678 is a deficient number, since it is larger than the sum of its proper divisors (25709243762).

51036664678 is a wasteful number, since it uses less digits than its factorization.

51036664678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63637142.

The product of its (nonzero) digits is 4354560, while the sum is 52.

The spelling of 51036664678 in words is "fifty-one billion, thirty-six million, six hundred sixty-four thousand, six hundred seventy-eight".