23403867218 has 8 divisors (see below), whose sum is σ = 35121252348. Its totient is φ = 11696783104.

The previous prime is 23403867211. The next prime is 23403867247. The reversal of 23403867218 is 81276830432.

It can be written as a sum of positive squares in 2 ways, for example, as 18134123569 + 5269743649 = 134663^2 + 72593^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (23403867211) 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, 2569571 + ... + 2578662.

Almost surely, 2^23403867218 is an apocalyptic number.

23403867218 is a deficient number, since it is larger than the sum of its proper divisors (11717385130).

23403867218 is a wasteful number, since it uses less digits than its factorization.

23403867218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5150508.

The product of its (nonzero) digits is 387072, while the sum is 44.

The spelling of 23403867218 in words is "twenty-three billion, four hundred three million, eight hundred sixty-seven thousand, two hundred eighteen".