23643623642557 has 8 divisors (see below), whose sum is σ = 23909378541120. Its totient is φ = 23377870882080.

The previous prime is 23643623642543. The next prime is 23643623642579. The reversal of 23643623642557 is 75524632634632.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23643623642557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23643623642957) 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, 34641798 + ... + 35317720.

It is an arithmetic number, because the mean of its divisors is an integer number (2988672317640).

Almost surely, 2^{23643623642557} is an apocalyptic number.

It is an amenable number.

23643623642557 is a deficient number, since it is larger than the sum of its proper divisors (265754898563).

23643623642557 is an equidigital number, since it uses as much as digits as its factorization.

23643623642557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1069043.

The product of its digits is 130636800, while the sum is 58.

The spelling of 23643623642557 in words is "twenty-three trillion, six hundred forty-three billion, six hundred twenty-three million, six hundred forty-two thousand, five hundred fifty-seven".