22561522001543 has 12 divisors (see below), whose sum is σ = 27213106081680. Its totient is φ = 18320634405216.

The previous prime is 22561522001537. The next prime is 22561522001549. The reversal of 22561522001543 is 34510022516522.

It is an interprime number because it is at equal distance from previous prime (22561522001537) and next prime (22561522001549).

It is not a de Polignac number, because 22561522001543 - 2³⁰ = 22560448259719 is a prime.

It is a super-2 number, since 2×22561522001543² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22561522001497 and 22561522001506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22561522001549) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4464089678 + ... + 4464094731.

It is an arithmetic number, because the mean of its divisors is an integer number (2267758840140).

Almost surely, 2^{22561522001543} is an apocalyptic number.

22561522001543 is a deficient number, since it is larger than the sum of its proper divisors (4651584080137).

22561522001543 is an equidigital number, since it uses as much as digits as its factorization.

22561522001543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8928184454 (or 8928184435 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 38.

The spelling of 22561522001543 in words is "twenty-two trillion, five hundred sixty-one billion, five hundred twenty-two million, one thousand, five hundred forty-three".