16064320731 has 8 divisors (see below), whose sum is σ = 22679041104. Its totient is φ = 10079573760.

The previous prime is 16064320729. The next prime is 16064320751. The reversal of 16064320731 is 13702346061.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16064320731 - 2¹ = 16064320729 is a prime.

It is a super-2 number, since 2×16064320731² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16064320692 and 16064320701.

It is not an unprimeable number, because it can be changed into a prime (16064320711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157493290 + ... + 157493391.

It is an arithmetic number, because the mean of its divisors is an integer number (2834880138).

Almost surely, 2^16064320731 is an apocalyptic number.

16064320731 is a deficient number, since it is larger than the sum of its proper divisors (6614720373).

16064320731 is a wasteful number, since it uses less digits than its factorization.

16064320731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314986701.

The product of its (nonzero) digits is 18144, while the sum is 33.

Adding to 16064320731 its reverse (13702346061), we get a palindrome (29766666792).

The spelling of 16064320731 in words is "sixteen billion, sixty-four million, three hundred twenty thousand, seven hundred thirty-one".