13549161420 has 36 divisors (see below), whose sum is σ = 41099123520. Its totient is φ = 3613109664.

The previous prime is 13549161419. The next prime is 13549161443. The reversal of 13549161420 is 2416194531.

It is a happy number.

13549161420 is a `hidden beast` number, since 1 + 35 + 4 + 9 + 1 + 614 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37636380 + ... + 37636739.

It is an arithmetic number, because the mean of its divisors is an integer number (1141642320).

Almost surely, 2^13549161420 is an apocalyptic number.

13549161420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13549161420 is an abundant number, since it is smaller than the sum of its proper divisors (27549962100).

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

13549161420 is a wasteful number, since it uses less digits than its factorization.

13549161420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75273134 (or 75273129 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The spelling of 13549161420 in words is "thirteen billion, five hundred forty-nine million, one hundred sixty-one thousand, four hundred twenty".