23072687545 has 8 divisors (see below), whose sum is σ = 27690265224. Its totient is φ = 18456123264.

The previous prime is 23072687543. The next prime is 23072687581. The reversal of 23072687545 is 54578627032.

It can be written as a sum of positive squares in 4 ways, for example, as 5524651584 + 17548035961 = 74328^2 + 132469^2 .

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 23072687545 - 2¹ = 23072687543 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23072687543) 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, 202324 + ... + 295093.

It is an arithmetic number, because the mean of its divisors is an integer number (3461283153).

Almost surely, 2^23072687545 is an apocalyptic number.

It is an amenable number.

23072687545 is a deficient number, since it is larger than the sum of its proper divisors (4617577679).

23072687545 is an equidigital number, since it uses as much as digits as its factorization.

23072687545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506699.

The product of its (nonzero) digits is 2822400, while the sum is 49.

The spelling of 23072687545 in words is "twenty-three billion, seventy-two million, six hundred eighty-seven thousand, five hundred forty-five".