23405343451 has 16 divisors (see below), whose sum is σ = 27043937280. Its totient is φ = 19841578560.

The previous prime is 23405343427. The next prime is 23405343469. The reversal of 23405343451 is 15434350432.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 23405343451 - 2⁷ = 23405343323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23405343491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 214860 + ... + 304918.

It is an arithmetic number, because the mean of its divisors is an integer number (1690246080).

Almost surely, 2^23405343451 is an apocalyptic number.

23405343451 is a deficient number, since it is larger than the sum of its proper divisors (3638593829).

23405343451 is a wasteful number, since it uses less digits than its factorization.

23405343451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90474.

The product of its (nonzero) digits is 86400, while the sum is 34.

Adding to 23405343451 its reverse (15434350432), we get a palindrome (38839693883).

The spelling of 23405343451 in words is "twenty-three billion, four hundred five million, three hundred forty-three thousand, four hundred fifty-one".