22012991506 has 16 divisors (see below), whose sum is σ = 36023641920. Its totient is φ = 10005243280.

The previous prime is 22012991477. The next prime is 22012991599. The reversal of 22012991506 is 60519921022.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 492435 + ... + 535273.

It is an arithmetic number, because the mean of its divisors is an integer number (2251477620).

Almost surely, 2^22012991506 is an apocalyptic number.

22012991506 is a deficient number, since it is larger than the sum of its proper divisors (14010650414).

22012991506 is a wasteful number, since it uses less digits than its factorization.

22012991506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66209.

The product of its (nonzero) digits is 19440, while the sum is 37.

The spelling of 22012991506 in words is "twenty-two billion, twelve million, nine hundred ninety-one thousand, five hundred six".