22154565642 has 16 divisors (see below), whose sum is σ = 48337234272. Its totient is φ = 6713504720.

The previous prime is 22154565613. The next prime is 22154565691. The reversal of 22154565642 is 24656545122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 22154565594 and 22154565603.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167837553 + ... + 167837684.

It is an arithmetic number, because the mean of its divisors is an integer number (3021077142).

Almost surely, 2^22154565642 is an apocalyptic number.

22154565642 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22154565642 is an abundant number, since it is smaller than the sum of its proper divisors (26182668630).

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

22154565642 is a wasteful number, since it uses less digits than its factorization.

22154565642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335675253.

The product of its digits is 576000, while the sum is 42.

The spelling of 22154565642 in words is "twenty-two billion, one hundred fifty-four million, five hundred sixty-five thousand, six hundred forty-two".