23390643413 has 4 divisors (see below), whose sum is σ = 23392538988. Its totient is φ = 23388747840.

The previous prime is 23390643407. The next prime is 23390643457. The reversal of 23390643413 is 31434609332.

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 21626055364 + 1764588049 = 147058^2 + 42007^2 .

It is a cyclic number.

It is not a de Polignac number, because 23390643413 - 2¹⁰ = 23390642389 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 (23390643613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 929156 + ... + 953997.

It is an arithmetic number, because the mean of its divisors is an integer number (5848134747).

Almost surely, 2^23390643413 is an apocalyptic number.

It is an amenable number.

23390643413 is a deficient number, since it is larger than the sum of its proper divisors (1895575).

23390643413 is a wasteful number, since it uses less digits than its factorization.

23390643413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1895574.

The product of its (nonzero) digits is 139968, while the sum is 38.

The spelling of 23390643413 in words is "twenty-three billion, three hundred ninety million, six hundred forty-three thousand, four hundred thirteen".