123727899204 has 72 divisors (see below), whose sum is σ = 384931252160. Its totient is φ = 32631532992.

The previous prime is 123727899203. The next prime is 123727899271. The reversal of 123727899204 is 402998727321.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (123727899203) 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, 18880714 + ... + 18887265.

Almost surely, 2^123727899204 is an apocalyptic number.

123727899204 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

123727899204 is an abundant number, since it is smaller than the sum of its proper divisors (261203352956).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123727899204 is a wasteful number, since it uses less digits than its factorization.

123727899204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37768009 (or 37768004 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 54.

The spelling of 123727899204 in words is "one hundred twenty-three billion, seven hundred twenty-seven million, eight hundred ninety-nine thousand, two hundred four".