123944980899 has 24 divisors (see below), whose sum is σ = 172943264592. Its totient is φ = 78952434880.

The previous prime is 123944980883. The next prime is 123944980903. The reversal of 123944980899 is 998089449321.

It is not a de Polignac number, because 123944980899 - 2⁴ = 123944980883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123944980879) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1451869 + ... + 1534865.

It is an arithmetic number, because the mean of its divisors is an integer number (7205969358).

Almost surely, 2^123944980899 is an apocalyptic number.

123944980899 is a deficient number, since it is larger than the sum of its proper divisors (48998283693).

123944980899 is an equidigital number, since it uses as much as digits as its factorization.

123944980899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83987 (or 83964 counting only the distinct ones).

The product of its (nonzero) digits is 40310784, while the sum is 66.

The spelling of 123944980899 in words is "one hundred twenty-three billion, nine hundred forty-four million, nine hundred eighty thousand, eight hundred ninety-nine".