22615420761 has 6 divisors (see below), whose sum is σ = 32666718890. Its totient is φ = 15076947168.

The previous prime is 22615420753. The next prime is 22615420781. The reversal of 22615420761 is 16702451622.

It is a happy number.

22615420761 is a `hidden beast` number, since 226 + 1 + 5 + 420 + 7 + 6 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 18924129225 + 3691291536 = 137565^2 + 60756^2 .

It is not a de Polignac number, because 22615420761 - 2³ = 22615420753 is a prime.

It is a super-2 number, since 2×22615420761² (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 (22615420781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1256412256 + ... + 1256412273.

Almost surely, 2^22615420761 is an apocalyptic number.

It is an amenable number.

22615420761 is a deficient number, since it is larger than the sum of its proper divisors (10051298129).

22615420761 is a wasteful number, since it uses less digits than its factorization.

22615420761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2512824535 (or 2512824532 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The spelling of 22615420761 in words is "twenty-two billion, six hundred fifteen million, four hundred twenty thousand, seven hundred sixty-one".