13421984185 has 8 divisors (see below), whose sum is σ = 16108162056. Its totient is φ = 10736400000.

The previous prime is 13421984183. The next prime is 13421984197. The reversal of 13421984185 is 58148912431.

It can be written as a sum of positive squares in 4 ways, for example, as 2247802921 + 11174181264 = 47411^2 + 105708^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13421984185 - 2¹ = 13421984183 is a prime.

It is a super-2 number, since 2×13421984185² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13421984183) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97066 + ... + 190435.

It is an arithmetic number, because the mean of its divisors is an integer number (2013520257).

Almost surely, 2^13421984185 is an apocalyptic number.

It is an amenable number.

13421984185 is a deficient number, since it is larger than the sum of its proper divisors (2686177871).

13421984185 is an equidigital number, since it uses as much as digits as its factorization.

13421984185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296843.

The product of its digits is 276480, while the sum is 46.

The spelling of 13421984185 in words is "thirteen billion, four hundred twenty-one million, nine hundred eighty-four thousand, one hundred eighty-five".