123996821368996 has 27 divisors (see below), whose sum is σ = 224221307047563. Its totient is φ = 59998127891160.

The previous prime is 123996821368963. The next prime is 123996821368999. The reversal of 123996821368996 is 699863128699321.

The square root of 123996821368996 is 11135386.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×123996821368996² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123996821368999) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 690304131 + ... + 690483733.

Almost surely, 2^{123996821368996} is an apocalyptic number.

123996821368996 is the 11135386-th square number.

It is an amenable number.

123996821368996 is a deficient number, since it is larger than the sum of its proper divisors (100224485678567).

123996821368996 is an frugal number, since it uses more digits than its factorization.

123996821368996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359272 (or 179636 counting only the distinct ones).

The product of its digits is 3265173504, while the sum is 82.

The spelling of 123996821368996 in words is "one hundred twenty-three trillion, nine hundred ninety-six billion, eight hundred twenty-one million, three hundred sixty-eight thousand, nine hundred ninety-six".