9942565605 has 32 divisors (see below), whose sum is σ = 18292260864. Its totient is φ = 4517280576.

The previous prime is 9942565541. The next prime is 9942565609. The reversal of 9942565605 is 5065652499.

It is a happy number.

It is not a de Polignac number, because 9942565605 - 2⁶ = 9942565541 is a prime.

It is a super-2 number, since 2×9942565605² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9942565609) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 273349 + ... + 307578.

It is an arithmetic number, because the mean of its divisors is an integer number (571633152).

Almost surely, 2^9942565605 is an apocalyptic number.

It is an amenable number.

9942565605 is a deficient number, since it is larger than the sum of its proper divisors (8349695259).

9942565605 is a wasteful number, since it uses less digits than its factorization.

9942565605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581105.

The product of its (nonzero) digits is 2916000, while the sum is 51.

The square root of 9942565605 is about 99712.4144978949. The cubic root of 9942565605 is about 2150.3021464673.

The spelling of 9942565605 in words is "nine billion, nine hundred forty-two million, five hundred sixty-five thousand, six hundred five".