23561154973 has 2 divisors, whose sum is σ = 23561154974. Its totient is φ = 23561154972.

The previous prime is 23561154959. The next prime is 23561154979. The reversal of 23561154973 is 37945116532.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21047335929 + 2513819044 = 145077^2 + 50138^2 .

It is a cyclic number.

It is not a de Polignac number, because 23561154973 - 2²⁵ = 23527600541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23561154979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11780577486 + 11780577487.

It is an arithmetic number, because the mean of its divisors is an integer number (11780577487).

Almost surely, 2^23561154973 is an apocalyptic number.

It is an amenable number.

23561154973 is a deficient number, since it is larger than the sum of its proper divisors (1).

23561154973 is an equidigital number, since it uses as much as digits as its factorization.

23561154973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 680400, while the sum is 46.

The spelling of 23561154973 in words is "twenty-three billion, five hundred sixty-one million, one hundred fifty-four thousand, nine hundred seventy-three".