13665482020 has 12 divisors (see below), whose sum is σ = 28697512284. Its totient is φ = 5466192800.

The previous prime is 13665482009. The next prime is 13665482021. The reversal of 13665482020 is 2028456631.

It can be written as a sum of positive squares in 2 ways, for example, as 8840512576 + 4824969444 = 94024^2 + 69462^2 .

It is not an unprimeable number, because it can be changed into a prime (13665482021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 341637031 + ... + 341637070.

It is an arithmetic number, because the mean of its divisors is an integer number (2391459357).

Almost surely, 2^13665482020 is an apocalyptic number.

13665482020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13665482020 is an abundant number, since it is smaller than the sum of its proper divisors (15032030264).

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

13665482020 is a wasteful number, since it uses less digits than its factorization.

13665482020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683274110 (or 683274108 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

The spelling of 13665482020 in words is "thirteen billion, six hundred sixty-five million, four hundred eighty-two thousand, twenty".