101638123223 has 16 divisors (see below), whose sum is σ = 125113584960. Its totient is φ = 80403791616.

The previous prime is 101638123219. The next prime is 101638123229. The reversal of 101638123223 is 322321836101.

It is a cyclic number.

It is not a de Polignac number, because 101638123223 - 2² = 101638123219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 101638123223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101638123229) 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, 486443 + ... + 663251.

It is an arithmetic number, because the mean of its divisors is an integer number (7819599060).

Almost surely, 2^101638123223 is an apocalyptic number.

101638123223 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

101638123223 is a deficient number, since it is larger than the sum of its proper divisors (23475461737).

101638123223 is a wasteful number, since it uses less digits than its factorization.

101638123223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183146.

The product of its (nonzero) digits is 10368, while the sum is 32.

Adding to 101638123223 its reverse (322321836101), we get a palindrome (423959959324).

The spelling of 101638123223 in words is "one hundred one billion, six hundred thirty-eight million, one hundred twenty-three thousand, two hundred twenty-three".