16001249736 has 16 divisors (see below), whose sum is σ = 40003124400. Its totient is φ = 5333749904.

The previous prime is 16001249731. The next prime is 16001249743. The reversal of 16001249736 is 63794210061.

It is a super-2 number, since 2×16001249736² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16001249694 and 16001249703.

It is not an unprimeable number, because it can be changed into a prime (16001249731) 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, 333359346 + ... + 333359393.

It is an arithmetic number, because the mean of its divisors is an integer number (2500195275).

Almost surely, 2^16001249736 is an apocalyptic number.

It is an amenable number.

16001249736 is an abundant number, since it is smaller than the sum of its proper divisors (24001874664).

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

16001249736 is a wasteful number, since it uses less digits than its factorization.

16001249736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666718748 (or 666718744 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 39.

Adding to 16001249736 its reverse (63794210061), we get a palindrome (79795459797).

The spelling of 16001249736 in words is "sixteen billion, one million, two hundred forty-nine thousand, seven hundred thirty-six".