723941134128 has 60 divisors (see below), whose sum is σ = 2028254031648. Its totient is φ = 241048778880.

The previous prime is 723941134127. The next prime is 723941134139. The reversal of 723941134128 is 821431149327.

723941134128 is a `hidden beast` number, since 7 + 2 + 394 + 1 + 134 + 128 = 666.

It is not an unprimeable number, because it can be changed into a prime (723941134123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2628075 + ... + 2890442.

Almost surely, 2^723941134128 is an apocalyptic number.

It is an amenable number.

723941134128 is an abundant number, since it is smaller than the sum of its proper divisors (1304312897520).

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

723941134128 is a wasteful number, since it uses less digits than its factorization.

723941134128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5519442 (or 5519433 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The spelling of 723941134128 in words is "seven hundred twenty-three billion, nine hundred forty-one million, one hundred thirty-four thousand, one hundred twenty-eight".