13165136420 has 24 divisors (see below), whose sum is σ = 28538619648. Its totient is φ = 5096181600.

The previous prime is 13165136419. The next prime is 13165136429. The reversal of 13165136420 is 2463156131.

It is not an unprimeable number, because it can be changed into a prime (13165136429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10616426 + ... + 10617665.

It is an arithmetic number, because the mean of its divisors is an integer number (1189109152).

Almost surely, 2^13165136420 is an apocalyptic number.

13165136420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13165136420 is an abundant number, since it is smaller than the sum of its proper divisors (15373483228).

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

13165136420 is a wasteful number, since it uses less digits than its factorization.

13165136420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21234131 (or 21234129 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The spelling of 13165136420 in words is "thirteen billion, one hundred sixty-five million, one hundred thirty-six thousand, four hundred twenty".