23340895981 has 4 divisors (see below), whose sum is σ = 25136349532. Its totient is φ = 21545442432.

The previous prime is 23340895969. The next prime is 23340896017. The reversal of 23340895981 is 18959804332.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3616097956 + 19724798025 = 60134^2 + 140445^2 .

It is a cyclic number.

It is not a de Polignac number, because 23340895981 - 2⁹ = 23340895469 is a prime.

It is a super-2 number, since 2×23340895981² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23340895931) 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 in 3 ways as a sum of consecutive naturals, for example, 897726756 + ... + 897726781.

It is an arithmetic number, because the mean of its divisors is an integer number (6284087383).

Almost surely, 2^23340895981 is an apocalyptic number.

It is an amenable number.

23340895981 is a deficient number, since it is larger than the sum of its proper divisors (1795453551).

23340895981 is a wasteful number, since it uses less digits than its factorization.

23340895981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1795453550.

The product of its (nonzero) digits is 1866240, while the sum is 52.

The spelling of 23340895981 in words is "twenty-three billion, three hundred forty million, eight hundred ninety-five thousand, nine hundred eighty-one".