101712772805 has 32 divisors (see below), whose sum is σ = 141843778560. Its totient is φ = 68570968320.

The previous prime is 101712772769. The next prime is 101712772823. The reversal of 101712772805 is 508277217101.

It is not a de Polignac number, because 101712772805 - 2³² = 97417805509 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5214611 + ... + 5234079.

It is an arithmetic number, because the mean of its divisors is an integer number (4432618080).

Almost surely, 2^101712772805 is an apocalyptic number.

It is an amenable number.

101712772805 is a deficient number, since it is larger than the sum of its proper divisors (40131005755).

101712772805 is a wasteful number, since it uses less digits than its factorization.

101712772805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21989.

The product of its (nonzero) digits is 54880, while the sum is 41.

Adding to 101712772805 its reverse (508277217101), we get a palindrome (609989989906).

The spelling of 101712772805 in words is "one hundred one billion, seven hundred twelve million, seven hundred seventy-two thousand, eight hundred five".