23645072145 has 32 divisors (see below), whose sum is σ = 39488332032. Its totient is φ = 12058948352.

The previous prime is 23645072131. The next prime is 23645072179. The reversal of 23645072145 is 54127054632.

It is a cyclic number.

It is not a de Polignac number, because 23645072145 - 2⁹ = 23645071633 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1550779 + ... + 1565951.

It is an arithmetic number, because the mean of its divisors is an integer number (1234010376).

Almost surely, 2^23645072145 is an apocalyptic number.

It is an amenable number.

23645072145 is a deficient number, since it is larger than the sum of its proper divisors (15843259887).

23645072145 is a wasteful number, since it uses less digits than its factorization.

23645072145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19721.

The product of its (nonzero) digits is 201600, while the sum is 39.

The spelling of 23645072145 in words is "twenty-three billion, six hundred forty-five million, seventy-two thousand, one hundred forty-five".