23645406427571 has 16 divisors (see below), whose sum is σ = 24298918451808. Its totient is φ = 22992657926400.

The previous prime is 23645406427549. The next prime is 23645406427579. The reversal of 23645406427571 is 17572460454632.

It is not a de Polignac number, because 23645406427571 - 2²⁶ = 23645339318707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23645406427579) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 719936276 + ... + 719969118.

It is an arithmetic number, because the mean of its divisors is an integer number (1518682403238).

Almost surely, 2^{23645406427571} is an apocalyptic number.

23645406427571 is a deficient number, since it is larger than the sum of its proper divisors (653512024237).

23645406427571 is a wasteful number, since it uses less digits than its factorization.

23645406427571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43862.

The product of its (nonzero) digits is 33868800, while the sum is 56.

The spelling of 23645406427571 in words is "twenty-three trillion, six hundred forty-five billion, four hundred six million, four hundred twenty-seven thousand, five hundred seventy-one".