23517747973 has 2 divisors, whose sum is σ = 23517747974. Its totient is φ = 23517747972.

The previous prime is 23517747947. The next prime is 23517747991. The reversal of 23517747973 is 37974771532.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15454965124 + 8062782849 = 124318^2 + 89793^2 .

It is a cyclic number.

It is not a de Polignac number, because 23517747973 - 2¹⁷ = 23517616901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23517787973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11758873986 + 11758873987.

It is an arithmetic number, because the mean of its divisors is an integer number (11758873987).

Almost surely, 2^23517747973 is an apocalyptic number.

It is an amenable number.

23517747973 is a deficient number, since it is larger than the sum of its proper divisors (1).

23517747973 is an equidigital number, since it uses as much as digits as its factorization.

23517747973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7779240, while the sum is 55.

The spelling of 23517747973 in words is "twenty-three billion, five hundred seventeen million, seven hundred forty-seven thousand, nine hundred seventy-three".