1564461122113 has 4 divisors (see below), whose sum is σ = 1575880546500. Its totient is φ = 1553041697728.

The previous prime is 1564461122053. The next prime is 1564461122117. The reversal of 1564461122113 is 3112211644651.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1097566331904 + 466894790209 = 1047648^2 + 683297^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1564461122113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1564461122117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5709711988 + ... + 5709712261.

It is an arithmetic number, because the mean of its divisors is an integer number (393970136625).

Almost surely, 2^{1564461122113} is an apocalyptic number.

It is an amenable number.

1564461122113 is a deficient number, since it is larger than the sum of its proper divisors (11419424387).

1564461122113 is a wasteful number, since it uses less digits than its factorization.

1564461122113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11419424386.

The product of its digits is 34560, while the sum is 37.

Adding to 1564461122113 its reverse (3112211644651), we get a palindrome (4676672766764).

The spelling of 1564461122113 in words is "one trillion, five hundred sixty-four billion, four hundred sixty-one million, one hundred twenty-two thousand, one hundred thirteen".