23355432451 has 4 divisors (see below), whose sum is σ = 25152004192. Its totient is φ = 21558860712.

The previous prime is 23355432329. The next prime is 23355432467. The reversal of 23355432451 is 15423455332.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23355432451 - 2²³ = 23347043843 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23355432451.

It is not an unprimeable number, because it can be changed into a prime (23355432851) 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, 898285851 + ... + 898285876.

It is an arithmetic number, because the mean of its divisors is an integer number (6288001048).

Almost surely, 2^23355432451 is an apocalyptic number.

23355432451 is a deficient number, since it is larger than the sum of its proper divisors (1796571741).

23355432451 is a wasteful number, since it uses less digits than its factorization.

23355432451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1796571740.

The product of its digits is 216000, while the sum is 37.

Adding to 23355432451 its reverse (15423455332), we get a palindrome (38778887783).

The spelling of 23355432451 in words is "twenty-three billion, three hundred fifty-five million, four hundred thirty-two thousand, four hundred fifty-one".