216622251463 has 4 divisors (see below), whose sum is σ = 218275856568. Its totient is φ = 214968646360.

The previous prime is 216622251437. The next prime is 216622251479. The reversal of 216622251463 is 364152226612.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-216622251463 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 (216622251493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 826802356 + ... + 826802617.

It is an arithmetic number, because the mean of its divisors is an integer number (54568964142).

Almost surely, 2^216622251463 is an apocalyptic number.

216622251463 is a deficient number, since it is larger than the sum of its proper divisors (1653605105).

216622251463 is a wasteful number, since it uses less digits than its factorization.

216622251463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1653605104.

The product of its digits is 207360, while the sum is 40.

The spelling of 216622251463 in words is "two hundred sixteen billion, six hundred twenty-two million, two hundred fifty-one thousand, four hundred sixty-three".