20064665610 has 96 divisors (see below), whose sum is σ = 56946913920. Its totient is φ = 4861065600.

The previous prime is 20064665591. The next prime is 20064665639. The reversal of 20064665610 is 1656646002.

It is a happy number.

20064665610 is a `hidden beast` number, since 2 + 0 + 0 + 646 + 6 + 5 + 6 + 1 + 0 = 666.

It is a super-2 number, since 2×20064665610² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1807156 + ... + 1818224.

It is an arithmetic number, because the mean of its divisors is an integer number (593197020).

Almost surely, 2^20064665610 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20064665610, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28473456960).

20064665610 is an abundant number, since it is smaller than the sum of its proper divisors (36882248310).

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

20064665610 is a wasteful number, since it uses less digits than its factorization.

20064665610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12924 (or 12921 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

It can be divided in two parts, 200646 and 65610, that added together give a square (266256 = 516²).

The spelling of 20064665610 in words is "twenty billion, sixty-four million, six hundred sixty-five thousand, six hundred ten".