23508773789 has 2 divisors, whose sum is σ = 23508773790. Its totient is φ = 23508773788.

The previous prime is 23508773779. The next prime is 23508773803. The reversal of 23508773789 is 98737780532.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20587371289 + 2921402500 = 143483^2 + 54050^2 .

It is a cyclic number.

It is not a de Polignac number, because 23508773789 - 2⁴ = 23508773773 is a prime.

It is a super-3 number, since 3×23508773789³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23508773779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11754386894 + 11754386895.

It is an arithmetic number, because the mean of its divisors is an integer number (11754386895).

Almost surely, 2^23508773789 is an apocalyptic number.

It is an amenable number.

23508773789 is a deficient number, since it is larger than the sum of its proper divisors (1).

23508773789 is an equidigital number, since it uses as much as digits as its factorization.

23508773789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17781120, while the sum is 59.

The spelling of 23508773789 in words is "twenty-three billion, five hundred eight million, seven hundred seventy-three thousand, seven hundred eighty-nine".