13641575072 has 12 divisors (see below), whose sum is σ = 26856850986. Its totient is φ = 6820787520.

The previous prime is 13641575071. The next prime is 13641575099. The reversal of 13641575072 is 27057514631.

It can be written as a sum of positive squares in only one way, i.e., 12258032656 + 1383542416 = 110716^2 + 37196^2 .

It is not an unprimeable number, because it can be changed into a prime (13641575071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213149579 + ... + 213149642.

Almost surely, 2^13641575072 is an apocalyptic number.

It is an amenable number.

13641575072 is a deficient number, since it is larger than the sum of its proper divisors (13215275914).

13641575072 is an equidigital number, since it uses as much as digits as its factorization.

13641575072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426299231 (or 426299223 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 41.

The spelling of 13641575072 in words is "thirteen billion, six hundred forty-one million, five hundred seventy-five thousand, seventy-two".