22662615561 has 16 divisors (see below), whose sum is σ = 32774632128. Its totient is φ = 13872857600.

The previous prime is 22662615557. The next prime is 22662615593. The reversal of 22662615561 is 16551626622.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 22662615561 - 2² = 22662615557 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22662615061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5416995 + ... + 5421176.

It is an arithmetic number, because the mean of its divisors is an integer number (2048414508).

Almost surely, 2^22662615561 is an apocalyptic number.

It is an amenable number.

22662615561 is a deficient number, since it is larger than the sum of its proper divisors (10112016567).

22662615561 is a wasteful number, since it uses less digits than its factorization.

22662615561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10838232.

The product of its digits is 259200, while the sum is 42.

The spelling of 22662615561 in words is "twenty-two billion, six hundred sixty-two million, six hundred fifteen thousand, five hundred sixty-one".