51865162663 has 8 divisors (see below), whose sum is σ = 52019557200. Its totient is φ = 51710876928.

The previous prime is 51865162637. The next prime is 51865162673. The reversal of 51865162663 is 36626156815.

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 51865162663 - 2²¹ = 51863065511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51865162673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 982968 + ... + 1034386.

It is an arithmetic number, because the mean of its divisors is an integer number (6502444650).

Almost surely, 2^51865162663 is an apocalyptic number.

51865162663 is a deficient number, since it is larger than the sum of its proper divisors (154394537).

51865162663 is a wasteful number, since it uses less digits than its factorization.

51865162663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54401.

The product of its digits is 1555200, while the sum is 49.

The spelling of 51865162663 in words is "fifty-one billion, eight hundred sixty-five million, one hundred sixty-two thousand, six hundred sixty-three".