23171000644 has 48 divisors (see below), whose sum is σ = 44425180800. Its totient is φ = 10487232000.

The previous prime is 23171000627. The next prime is 23171000767. The reversal of 23171000644 is 44600017132.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16214122 + ... + 16215550.

It is an arithmetic number, because the mean of its divisors is an integer number (925524600).

Almost surely, 2^23171000644 is an apocalyptic number.

It is an amenable number.

23171000644 is a deficient number, since it is larger than the sum of its proper divisors (21254180156).

23171000644 is a wasteful number, since it uses less digits than its factorization.

23171000644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2764 (or 2762 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

Adding to 23171000644 its reverse (44600017132), we get a palindrome (67771017776).

The spelling of 23171000644 in words is "twenty-three billion, one hundred seventy-one million, six hundred forty-four", and thus it is an aban number.