20005165440660 has 96 divisors (see below), whose sum is σ = 56176063130880. Its totient is φ = 5319335052288.

The previous prime is 20005165440643. The next prime is 20005165440727. The reversal of 20005165440660 is 6604456150002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43416202 + ... + 43874558.

It is an arithmetic number, because the mean of its divisors is an integer number (585167324280).

Almost surely, 2^{20005165440660} is an apocalyptic number.

20005165440660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20005165440660 is an abundant number, since it is smaller than the sum of its proper divisors (36170897690220).

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

20005165440660 is a wasteful number, since it uses less digits than its factorization.

20005165440660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460465 (or 460463 counting only the distinct ones).

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

The spelling of 20005165440660 in words is "twenty trillion, five billion, one hundred sixty-five million, four hundred forty thousand, six hundred sixty".