10065565620 has 72 divisors (see below), whose sum is σ = 33307878240. Its totient is φ = 2440136640.

The previous prime is 10065565619. The next prime is 10065565621. The reversal of 10065565620 is 2656556001.

It is a happy number.

10065565620 is a `hidden beast` number, since 10 + 0 + 65 + 565 + 6 + 20 = 666.

It is an interprime number because it is at equal distance from previous prime (10065565619) and next prime (10065565621).

It is a super-2 number, since 2×10065565620² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10065565621) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2539830 + ... + 2543789.

It is an arithmetic number, because the mean of its divisors is an integer number (462609420).

Almost surely, 2^10065565620 is an apocalyptic number.

10065565620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10065565620 is an abundant number, since it is smaller than the sum of its proper divisors (23242312620).

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

10065565620 is a wasteful number, since it uses less digits than its factorization.

10065565620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5083645 (or 5083640 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The spelling of 10065565620 in words is "ten billion, sixty-five million, five hundred sixty-five thousand, six hundred twenty".