13645221514 has 16 divisors (see below), whose sum is σ = 20907216000. Its totient is φ = 6676203744.

The previous prime is 13645221511. The next prime is 13645221553. The reversal of 13645221514 is 41512254631.

It is a super-2 number, since 2×13645221514² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13645221514.

It is not an unprimeable number, because it can be changed into a prime (13645221511) 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, 682837 + ... + 702535.

It is an arithmetic number, because the mean of its divisors is an integer number (1306701000).

Almost surely, 2^13645221514 is an apocalyptic number.

13645221514 is a deficient number, since it is larger than the sum of its proper divisors (7261994486).

13645221514 is a wasteful number, since it uses less digits than its factorization.

13645221514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27117.

The product of its digits is 28800, while the sum is 34.

The spelling of 13645221514 in words is "thirteen billion, six hundred forty-five million, two hundred twenty-one thousand, five hundred fourteen".