16222387464 has 24 divisors (see below), whose sum is σ = 43935632910. Its totient is φ = 5407462464.

The previous prime is 16222387457. The next prime is 16222387537. The reversal of 16222387464 is 46478322261.

It is a happy number.

16222387464 is a `hidden beast` number, since 1 + 6 + 222 + 387 + 46 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 14898155364 + 1324232100 = 122058^2 + 36390^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 112655397 + ... + 112655540.

Almost surely, 2^16222387464 is an apocalyptic number.

It is an amenable number.

16222387464 is an abundant number, since it is smaller than the sum of its proper divisors (27713245446).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16222387464 is a wasteful number, since it uses less digits than its factorization.

16222387464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225310949 (or 225310942 counting only the distinct ones).

The product of its digits is 774144, while the sum is 45.

The spelling of 16222387464 in words is "sixteen billion, two hundred twenty-two million, three hundred eighty-seven thousand, four hundred sixty-four".