13577284538 has 4 divisors (see below), whose sum is σ = 20365926810. Its totient is φ = 6788642268.

The previous prime is 13577284531. The next prime is 13577284543. The reversal of 13577284538 is 83548277531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11475337129 + 2101947409 = 107123^2 + 45847^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 13577284538.

It is not an unprimeable number, because it can be changed into a prime (13577284531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3394321133 + ... + 3394321136.

Almost surely, 2^13577284538 is an apocalyptic number.

13577284538 is a deficient number, since it is larger than the sum of its proper divisors (6788642272).

13577284538 is an equidigital number, since it uses as much as digits as its factorization.

13577284538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6788642271.

The product of its digits is 5644800, while the sum is 53.

The spelling of 13577284538 in words is "thirteen billion, five hundred seventy-seven million, two hundred eighty-four thousand, five hundred thirty-eight".