51864246815 has 8 divisors (see below), whose sum is σ = 62239207920. Its totient is φ = 41489989632.

The previous prime is 51864246803. The next prime is 51864246839.

51864246815 is nontrivially palindromic in base 10.

51864246815 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 cyclic number.

It is not a de Polignac number, because 51864246815 - 2⁶ = 51864246751 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2591 + ... + 322079.

It is an arithmetic number, because the mean of its divisors is an integer number (7779900990).

Almost surely, 2^51864246815 is an apocalyptic number.

51864246815 is a deficient number, since it is larger than the sum of its proper divisors (10374961105).

51864246815 is a wasteful number, since it uses less digits than its factorization.

51864246815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351961.

The product of its digits is 1843200, while the sum is 50.

The spelling of 51864246815 in words is "fifty-one billion, eight hundred sixty-four million, two hundred forty-six thousand, eight hundred fifteen".