213842299649 has 4 divisors (see below), whose sum is σ = 233282508720. Its totient is φ = 194402090580.

The previous prime is 213842299637. The next prime is 213842299673. The reversal of 213842299649 is 946992248312.

It is a happy number.

213842299649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 213842299649 - 2³⁶ = 145122822913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213842299249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9720104519 + ... + 9720104540.

It is an arithmetic number, because the mean of its divisors is an integer number (58320627180).

Almost surely, 2^213842299649 is an apocalyptic number.

It is an amenable number.

213842299649 is a deficient number, since it is larger than the sum of its proper divisors (19440209071).

213842299649 is a wasteful number, since it uses less digits than its factorization.

213842299649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19440209070.

The product of its digits is 13436928, while the sum is 59.

The spelling of 213842299649 in words is "two hundred thirteen billion, eight hundred forty-two million, two hundred ninety-nine thousand, six hundred forty-nine".