20600195660 has 48 divisors (see below), whose sum is σ = 47208268800. Its totient is φ = 7488584640.

The previous prime is 20600195579. The next prime is 20600195729. The reversal of 20600195660 is 6659100602.

It is a happy number.

It is a super-2 number, since 2×20600195660² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20600195660.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 767141 + ... + 793539.

It is an arithmetic number, because the mean of its divisors is an integer number (983505600).

Almost surely, 2^20600195660 is an apocalyptic number.

20600195660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20600195660 is an abundant number, since it is smaller than the sum of its proper divisors (26608073140).

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

20600195660 is a wasteful number, since it uses less digits than its factorization.

20600195660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29966 (or 29964 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 35.

The spelling of 20600195660 in words is "twenty billion, six hundred million, one hundred ninety-five thousand, six hundred sixty".