26563624242 has 16 divisors (see below), whose sum is σ = 53215653792. Its totient is φ = 8839807200.

The previous prime is 26563624207. The next prime is 26563624259. The reversal of 26563624242 is 24242636562.

It is a happy number.

It is a super-2 number, since 2×26563624242² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 26563624194 and 26563624203.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3679648 + ... + 3686859.

It is an arithmetic number, because the mean of its divisors is an integer number (3325978362).

Almost surely, 2^26563624242 is an apocalyptic number.

26563624242 is an abundant number, since it is smaller than the sum of its proper divisors (26652029550).

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

26563624242 is a wasteful number, since it uses less digits than its factorization.

26563624242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7367113.

The product of its digits is 829440, while the sum is 42.

The spelling of 26563624242 in words is "twenty-six billion, five hundred sixty-three million, six hundred twenty-four thousand, two hundred forty-two".