16031409668 has 12 divisors (see below), whose sum is σ = 28063163100. Its totient is φ = 8013363072.

The previous prime is 16031409661. The next prime is 16031409701. The reversal of 16031409668 is 86690413061.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 8526306244 + 7505103424 = 92338^2 + 86632^2 .

It is not an unprimeable number, because it can be changed into a prime (16031409661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 569993 + ... + 597456.

It is an arithmetic number, because the mean of its divisors is an integer number (2338596925).

Almost surely, 2^16031409668 is an apocalyptic number.

It is an amenable number.

16031409668 is a deficient number, since it is larger than the sum of its proper divisors (12031753432).

16031409668 is a wasteful number, since it uses less digits than its factorization.

16031409668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1170886 (or 1170884 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 44.

The spelling of 16031409668 in words is "sixteen billion, thirty-one million, four hundred nine thousand, six hundred sixty-eight".