23355619447 has 2 divisors, whose sum is σ = 23355619448. Its totient is φ = 23355619446.

The previous prime is 23355619403. The next prime is 23355619453. The reversal of 23355619447 is 74491655332.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23355619447 - 2³¹ = 21208135799 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23355619447.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23355617447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11677809723 + 11677809724.

It is an arithmetic number, because the mean of its divisors is an integer number (11677809724).

Almost surely, 2^23355619447 is an apocalyptic number.

23355619447 is a deficient number, since it is larger than the sum of its proper divisors (1).

23355619447 is an equidigital number, since it uses as much as digits as its factorization.

23355619447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2721600, while the sum is 49.

The spelling of 23355619447 in words is "twenty-three billion, three hundred fifty-five million, six hundred nineteen thousand, four hundred forty-seven".