23013386509 has 4 divisors (see below), whose sum is σ = 23015205216. Its totient is φ = 23011567804.

The previous prime is 23013386477. The next prime is 23013386519. The reversal of 23013386509 is 90568331032.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23013386509 - 2⁵ = 23013386477 is a prime.

It is a super-2 number, since 2×23013386509² (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 (23013386519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 890239 + ... + 915724.

It is an arithmetic number, because the mean of its divisors is an integer number (5753801304).

Almost surely, 2^23013386509 is an apocalyptic number.

It is an amenable number.

23013386509 is a deficient number, since it is larger than the sum of its proper divisors (1818707).

23013386509 is a wasteful number, since it uses less digits than its factorization.

23013386509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1818706.

The product of its (nonzero) digits is 116640, while the sum is 40.

The spelling of 23013386509 in words is "twenty-three billion, thirteen million, three hundred eighty-six thousand, five hundred nine".