23547789509 has 8 divisors (see below), whose sum is σ = 23592627648. Its totient is φ = 23502978720.

The previous prime is 23547789487. The next prime is 23547789523. The reversal of 23547789509 is 90598774532.

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 23547789509 - 2²⁰ = 23546740933 is a prime.

It is a super-2 number, since 2×23547789509² (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 (23547789809) 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, 2620394 + ... + 2629364.

It is an arithmetic number, because the mean of its divisors is an integer number (2949078456).

Almost surely, 2^23547789509 is an apocalyptic number.

It is an amenable number.

23547789509 is a deficient number, since it is larger than the sum of its proper divisors (44838139).

23547789509 is an equidigital number, since it uses as much as digits as its factorization.

23547789509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13675.

The product of its (nonzero) digits is 19051200, while the sum is 59.

The spelling of 23547789509 in words is "twenty-three billion, five hundred forty-seven million, seven hundred eighty-nine thousand, five hundred nine".