23561376547 has 2 divisors, whose sum is σ = 23561376548. Its totient is φ = 23561376546.

The previous prime is 23561376539. The next prime is 23561376551. The reversal of 23561376547 is 74567316532.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23561376547 - 2³ = 23561376539 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23561376547.

It is not a weakly prime, because it can be changed into another prime (23561376347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11780688273 + 11780688274.

It is an arithmetic number, because the mean of its divisors is an integer number (11780688274).

Almost surely, 2^23561376547 is an apocalyptic number.

23561376547 is a deficient number, since it is larger than the sum of its proper divisors (1).

23561376547 is an equidigital number, since it uses as much as digits as its factorization.

23561376547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3175200, while the sum is 49.

The spelling of 23561376547 in words is "twenty-three billion, five hundred sixty-one million, three hundred seventy-six thousand, five hundred forty-seven".