51813700863 has 8 divisors (see below), whose sum is σ = 69151430400. Its totient is φ = 34509219288.

The previous prime is 51813700859. The next prime is 51813700871. The reversal of 51813700863 is 36800731815.

51813700863 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 not a de Polignac number, because 51813700863 - 2² = 51813700859 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51813700063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8308353 + ... + 8314586.

It is an arithmetic number, because the mean of its divisors is an integer number (8643928800).

Almost surely, 2^51813700863 is an apocalyptic number.

51813700863 is a deficient number, since it is larger than the sum of its proper divisors (17337729537).

51813700863 is a wasteful number, since it uses less digits than its factorization.

51813700863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16623981.

The product of its (nonzero) digits is 120960, while the sum is 42.

The spelling of 51813700863 in words is "fifty-one billion, eight hundred thirteen million, seven hundred thousand, eight hundred sixty-three".