22428664815 has 32 divisors (see below), whose sum is σ = 37823785920. Its totient is φ = 11331547136.

The previous prime is 22428664813. The next prime is 22428664831. The reversal of 22428664815 is 51846682422.

It is a cyclic number.

It is not a de Polignac number, because 22428664815 - 2¹ = 22428664813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22428664813) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 463362 + ... + 509471.

It is an arithmetic number, because the mean of its divisors is an integer number (1181993310).

Almost surely, 2^22428664815 is an apocalyptic number.

22428664815 is a deficient number, since it is larger than the sum of its proper divisors (15395121105).

22428664815 is a wasteful number, since it uses less digits than its factorization.

22428664815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 972923.

The product of its digits is 1474560, while the sum is 48.

The spelling of 22428664815 in words is "twenty-two billion, four hundred twenty-eight million, six hundred sixty-four thousand, eight hundred fifteen".