123899776036 has 81 divisors (see below), whose sum is σ = 234273512529. Its totient is φ = 57327150816.

The previous prime is 123899776031. The next prime is 123899776043. The reversal of 123899776036 is 630677998321.

The square root of 123899776036 is 351994.

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

It can be written as a sum of positive squares in only one way, i.e., 36316924900 + 87582851136 = 190570^2 + 295944^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123899776031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 789170470 + ... + 789170626.

Almost surely, 2^123899776036 is an apocalyptic number.

123899776036 is the 351994-th square number.

It is an amenable number.

123899776036 is a deficient number, since it is larger than the sum of its proper divisors (110373736493).

123899776036 is an equidigital number, since it uses as much as digits as its factorization.

123899776036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474 (or 237 counting only the distinct ones).

The product of its (nonzero) digits is 20575296, while the sum is 61.

The spelling of 123899776036 in words is "one hundred twenty-three billion, eight hundred ninety-nine million, seven hundred seventy-six thousand, thirty-six".