9642234468649 has 4 divisors (see below), whose sum is σ = 9679752890964. Its totient is φ = 9604716046336.

The previous prime is 9642234468623. The next prime is 9642234468679. The reversal of 9642234468649 is 9468644322469.

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 8177844054249 + 1464390414400 = 2859693^2 + 1210120^2 .

It is a cyclic number.

It is not a de Polignac number, because 9642234468649 - 2¹⁷ = 9642234337577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9642234468679) 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, 18759210772 + ... + 18759211285.

It is an arithmetic number, because the mean of its divisors is an integer number (2419938222741).

Almost surely, 2^{9642234468649} is an apocalyptic number.

It is an amenable number.

9642234468649 is a deficient number, since it is larger than the sum of its proper divisors (37518422315).

9642234468649 is a wasteful number, since it uses less digits than its factorization.

9642234468649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37518422314.

The product of its digits is 429981696, while the sum is 67.

The spelling of 9642234468649 in words is "nine trillion, six hundred forty-two billion, two hundred thirty-four million, four hundred sixty-eight thousand, six hundred forty-nine".