51622522663 has 4 divisors (see below), whose sum is σ = 54339497560. Its totient is φ = 48905547768.

The previous prime is 51622522657. The next prime is 51622522769. The reversal of 51622522663 is 36622522615.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51622522663 - 2⁵ = 51622522631 is a prime.

It is a super-2 number, since 2×51622522663² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51622522363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1358487420 + ... + 1358487457.

It is an arithmetic number, because the mean of its divisors is an integer number (13584874390).

Almost surely, 2^51622522663 is an apocalyptic number.

51622522663 is a deficient number, since it is larger than the sum of its proper divisors (2716974897).

51622522663 is a wasteful number, since it uses less digits than its factorization.

51622522663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2716974896.

The product of its digits is 259200, while the sum is 40.

The spelling of 51622522663 in words is "fifty-one billion, six hundred twenty-two million, five hundred twenty-two thousand, six hundred sixty-three".