16215722863 has 4 divisors (see below), whose sum is σ = 16319007880. Its totient is φ = 16112437848.

The previous prime is 16215722857. The next prime is 16215722921. The reversal of 16215722863 is 36822751261.

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 16215722863 - 2⁹ = 16215722351 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 (16215722363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51642273 + ... + 51642586.

It is an arithmetic number, because the mean of its divisors is an integer number (4079751970).

Almost surely, 2^16215722863 is an apocalyptic number.

16215722863 is a deficient number, since it is larger than the sum of its proper divisors (103285017).

16215722863 is a wasteful number, since it uses less digits than its factorization.

16215722863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103285016.

The product of its digits is 241920, while the sum is 43.

The spelling of 16215722863 in words is "sixteen billion, two hundred fifteen million, seven hundred twenty-two thousand, eight hundred sixty-three".