2121614643613 has 4 divisors (see below), whose sum is σ = 2246415505020. Its totient is φ = 1996813782208.

The previous prime is 2121614643611. The next prime is 2121614643637. The reversal of 2121614643613 is 3163464161212.

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 674545188249 + 1447069455364 = 821307^2 + 1202942^2 .

It is a cyclic number.

It is not a de Polignac number, because 2121614643613 - 2¹ = 2121614643611 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121614643611) 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, 62400430678 + ... + 62400430711.

It is an arithmetic number, because the mean of its divisors is an integer number (561603876255).

Almost surely, 2^{2121614643613} is an apocalyptic number.

It is an amenable number.

2121614643613 is a deficient number, since it is larger than the sum of its proper divisors (124800861407).

2121614643613 is a wasteful number, since it uses less digits than its factorization.

2121614643613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124800861406.

The product of its digits is 124416, while the sum is 40.

The spelling of 2121614643613 in words is "two trillion, one hundred twenty-one billion, six hundred fourteen million, six hundred forty-three thousand, six hundred thirteen".