23404421511 has 6 divisors (see below), whose sum is σ = 33806386640. Its totient is φ = 15602947668.

The previous prime is 23404421503. The next prime is 23404421533. The reversal of 23404421511 is 11512440432.

23404421511 is a `hidden beast` number, since 234 + 0 + 4 + 421 + 5 + 1 + 1 = 666.

It is not a de Polignac number, because 23404421511 - 2³ = 23404421503 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 (23404420511) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1300245631 + ... + 1300245648.

Almost surely, 2^23404421511 is an apocalyptic number.

23404421511 is a deficient number, since it is larger than the sum of its proper divisors (10401965129).

23404421511 is a wasteful number, since it uses less digits than its factorization.

23404421511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2600491285 (or 2600491282 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

Adding to 23404421511 its reverse (11512440432), we get a palindrome (34916861943).

The spelling of 23404421511 in words is "twenty-three billion, four hundred four million, four hundred twenty-one thousand, five hundred eleven".