13645145228 has 96 divisors (see below), whose sum is σ = 28570967040. Its totient is φ = 5620285440.

The previous prime is 13645145207. The next prime is 13645145281. The reversal of 13645145228 is 82254154631.

It is a super-2 number, since 2×13645145228² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17743628 + ... + 17744396.

It is an arithmetic number, because the mean of its divisors is an integer number (297614240).

Almost surely, 2^13645145228 is an apocalyptic number.

It is an amenable number.

13645145228 is an abundant number, since it is smaller than the sum of its proper divisors (14925821812).

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

13645145228 is a wasteful number, since it uses less digits than its factorization.

13645145228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1327 (or 1325 counting only the distinct ones).

The product of its digits is 230400, while the sum is 41.

Adding to 13645145228 its reverse (82254154631), we get a palindrome (95899299859).

The spelling of 13645145228 in words is "thirteen billion, six hundred forty-five million, one hundred forty-five thousand, two hundred twenty-eight".