22533561561 has 8 divisors (see below), whose sum is σ = 34336855744. Its totient is φ = 12876320880.

The previous prime is 22533561559. The next prime is 22533561577. The reversal of 22533561561 is 16516533522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22533561561 - 2¹ = 22533561559 is a prime.

It is a super-2 number, since 2×22533561561² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22533561551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 536513350 + ... + 536513391.

It is an arithmetic number, because the mean of its divisors is an integer number (4292106968).

Almost surely, 2^22533561561 is an apocalyptic number.

22533561561 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22533561561 is a deficient number, since it is larger than the sum of its proper divisors (11803294183).

22533561561 is a wasteful number, since it uses less digits than its factorization.

22533561561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1073026751.

The product of its digits is 162000, while the sum is 39.

The spelling of 22533561561 in words is "twenty-two billion, five hundred thirty-three million, five hundred sixty-one thousand, five hundred sixty-one".