23078105509 has 8 divisors (see below), whose sum is σ = 23561850240. Its totient is φ = 22596150096.

The previous prime is 23078105507. The next prime is 23078105513. The reversal of 23078105509 is 90550187032.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23078105509 - 2¹ = 23078105507 is a prime.

It is a super-2 number, since 2×23078105509² (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 (23078105507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 421249 + ... + 472870.

It is an arithmetic number, because the mean of its divisors is an integer number (2945231280).

Almost surely, 2^23078105509 is an apocalyptic number.

It is an amenable number.

23078105509 is a deficient number, since it is larger than the sum of its proper divisors (483744731).

23078105509 is an equidigital number, since it uses as much as digits as its factorization.

23078105509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 894659.

The product of its (nonzero) digits is 75600, while the sum is 40.

The spelling of 23078105509 in words is "twenty-three billion, seventy-eight million, one hundred five thousand, five hundred nine".