22615420665 has 16 divisors (see below), whose sum is σ = 36214532928. Its totient is φ = 12051604416.

The previous prime is 22615420609. The next prime is 22615420691. The reversal of 22615420665 is 56602451622.

It is not a de Polignac number, because 22615420665 - 2²⁰ = 22614372089 is a prime.

It is a super-2 number, since 2×22615420665² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 603279 + ... + 639668.

It is an arithmetic number, because the mean of its divisors is an integer number (2263408308).

Almost surely, 2^22615420665 is an apocalyptic number.

It is an amenable number.

22615420665 is a deficient number, since it is larger than the sum of its proper divisors (13599112263).

22615420665 is a wasteful number, since it uses less digits than its factorization.

22615420665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1244168.

The product of its (nonzero) digits is 172800, while the sum is 39.

The spelling of 22615420665 in words is "twenty-two billion, six hundred fifteen million, four hundred twenty thousand, six hundred sixty-five".