22443545545551 has 64 divisors (see below), whose sum is σ = 38001652899840. Its totient is φ = 12968815080960.

The previous prime is 22443545545513. The next prime is 22443545545573. The reversal of 22443545545551 is 15554554534422.

22443545545551 is a `hidden beast` number, since 2 + 2 + 4 + 4 + 3 + 5 + 45 + 5 + 45 + 551 = 666.

It is not a de Polignac number, because 22443545545551 - 2¹⁵ = 22443545512783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22443545545051) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1791655 + ... + 6935208.

It is an arithmetic number, because the mean of its divisors is an integer number (593775826560).

Almost surely, 2^{22443545545551} is an apocalyptic number.

22443545545551 is a deficient number, since it is larger than the sum of its proper divisors (15558107354289).

22443545545551 is a wasteful number, since it uses less digits than its factorization.

22443545545551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8727333 (or 8727327 counting only the distinct ones).

The product of its digits is 48000000, while the sum is 54.

The spelling of 22443545545551 in words is "twenty-two trillion, four hundred forty-three billion, five hundred forty-five million, five hundred forty-five thousand, five hundred fifty-one".