5321499644161 has 4 divisors (see below), whose sum is σ = 5634529035012. Its totient is φ = 5008470253312.

The previous prime is 5321499644023. The next prime is 5321499644173. The reversal of 5321499644161 is 1614469941235.

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 2625890611600 + 2695609032561 = 1620460^2 + 1641831^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5321499644161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5321499644761) 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, 156514695400 + ... + 156514695433.

It is an arithmetic number, because the mean of its divisors is an integer number (1408632258753).

Almost surely, 2^{5321499644161} is an apocalyptic number.

It is an amenable number.

5321499644161 is a deficient number, since it is larger than the sum of its proper divisors (313029390851).

5321499644161 is a wasteful number, since it uses less digits than its factorization.

5321499644161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313029390850.

The product of its digits is 5598720, while the sum is 55.

The spelling of 5321499644161 in words is "five trillion, three hundred twenty-one billion, four hundred ninety-nine million, six hundred forty-four thousand, one hundred sixty-one".