23645652537 has 16 divisors (see below), whose sum is σ = 34088015808. Its totient is φ = 14493192000.

The previous prime is 23645652533. The next prime is 23645652643. The reversal of 23645652537 is 73525654632.

It is not a de Polignac number, because 23645652537 - 2² = 23645652533 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23645652533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1197978 + ... + 1217555.

It is an arithmetic number, because the mean of its divisors is an integer number (2130500988).

Almost surely, 2^23645652537 is an apocalyptic number.

It is an amenable number.

23645652537 is a deficient number, since it is larger than the sum of its proper divisors (10442363271).

23645652537 is a wasteful number, since it uses less digits than its factorization.

23645652537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2415800.

The product of its digits is 4536000, while the sum is 48.

The spelling of 23645652537 in words is "twenty-three billion, six hundred forty-five million, six hundred fifty-two thousand, five hundred thirty-seven".