5214164643521 has 4 divisors (see below), whose sum is σ = 5214192706500. Its totient is φ = 5214136580544.

The previous prime is 5214164643503. The next prime is 5214164643533. The reversal of 5214164643521 is 1253464614125.

It is a happy number.

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 2174633912896 + 3039530730625 = 1474664^2 + 1743425^2 .

It is a cyclic number.

It is not a de Polignac number, because 5214164643521 - 2¹⁰ = 5214164642497 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5214164642521) 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, 13750916 + ... + 14125013.

It is an arithmetic number, because the mean of its divisors is an integer number (1303548176625).

Almost surely, 2^{5214164643521} is an apocalyptic number.

It is an amenable number.

5214164643521 is a deficient number, since it is larger than the sum of its proper divisors (28062979).

5214164643521 is a wasteful number, since it uses less digits than its factorization.

5214164643521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28062978.

The product of its digits is 691200, while the sum is 44.

The spelling of 5214164643521 in words is "five trillion, two hundred fourteen billion, one hundred sixty-four million, six hundred forty-three thousand, five hundred twenty-one".