123640212223036 has 24 divisors (see below), whose sum is σ = 216983828880000. Its totient is φ = 61644896543664.

The previous prime is 123640212222997. The next prime is 123640212223051. The reversal of 123640212223036 is 630322212046321.

It is a junction number, because it is equal to n+sod(n) for n = 123640212222986 and 123640212223004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 267256 + ... + 15727423.

It is an arithmetic number, because the mean of its divisors is an integer number (9040992870000).

Almost surely, 2^{123640212223036} is an apocalyptic number.

It is an amenable number.

123640212223036 is a deficient number, since it is larger than the sum of its proper divisors (93343616656964).

123640212223036 is a wasteful number, since it uses less digits than its factorization.

123640212223036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16000161 (or 16000159 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 37.

Adding to 123640212223036 its reverse (630322212046321), we get a palindrome (753962424269357).

The spelling of 123640212223036 in words is "one hundred twenty-three trillion, six hundred forty billion, two hundred twelve million, two hundred twenty-three thousand, thirty-six".