23011850989 has 2 divisors, whose sum is σ = 23011850990. Its totient is φ = 23011850988.

The previous prime is 23011850977. The next prime is 23011850993. The reversal of 23011850989 is 98905811032.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21353976900 + 1657874089 = 146130^2 + 40717^2 .

It is a cyclic number.

It is not a de Polignac number, because 23011850989 - 2¹³ = 23011842797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23011850959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11505925494 + 11505925495.

It is an arithmetic number, because the mean of its divisors is an integer number (11505925495).

Almost surely, 2^23011850989 is an apocalyptic number.

It is an amenable number.

23011850989 is a deficient number, since it is larger than the sum of its proper divisors (1).

23011850989 is an equidigital number, since it uses as much as digits as its factorization.

23011850989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 155520, while the sum is 46.

The spelling of 23011850989 in words is "twenty-three billion, eleven million, eight hundred fifty thousand, nine hundred eighty-nine".