13445405146 has 4 divisors (see below), whose sum is σ = 20168107722. Its totient is φ = 6722702572.

The previous prime is 13445405107. The next prime is 13445405147. The reversal of 13445405146 is 64150454431.

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., 13392275625 + 53129521 = 115725^2 + 7289^2 .

It is not an unprimeable number, because it can be changed into a prime (13445405147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3361351285 + ... + 3361351288.

Almost surely, 2^13445405146 is an apocalyptic number.

13445405146 is a deficient number, since it is larger than the sum of its proper divisors (6722702576).

13445405146 is an equidigital number, since it uses as much as digits as its factorization.

13445405146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6722702575.

The product of its (nonzero) digits is 115200, while the sum is 37.

Adding to 13445405146 its reverse (64150454431), we get a palindrome (77595859577).

The spelling of 13445405146 in words is "thirteen billion, four hundred forty-five million, four hundred five thousand, one hundred forty-six".