13000000020 has 96 divisors (see below), whose sum is σ = 41899468800. Its totient is φ = 2950038144.

The previous prime is 12999999959. The next prime is 13000000073. The reversal of 13000000020 is 2000000031.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a junction number, because it is equal to n+sod(n) for n = 12999999945 and 13000000008.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52960 + ... + 169719.

It is an arithmetic number, because the mean of its divisors is an integer number (436452800).

Almost surely, 2^13000000020 is an apocalyptic number.

13000000020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13000000020 is an abundant number, since it is smaller than the sum of its proper divisors (28899468780).

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

13000000020 is a wasteful number, since it uses less digits than its factorization.

13000000020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222837 (or 222835 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 6.

Adding to 13000000020 its reverse (2000000031), we get a palindrome (15000000051).

The spelling of 13000000020 in words is "thirteen billion, twenty", and thus it is an aban number and an uban number.