16312702131508 has 48 divisors (see below), whose sum is σ = 29564125390800. Its totient is φ = 7866432967680.

The previous prime is 16312702131433. The next prime is 16312702131587. The reversal of 16312702131508 is 80513120721361.

16312702131508 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 10529388989604 + 5783313141904 = 3244902^2 + 2404852^2 .

It is a super-2 number, since 2×16312702131508² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 443731848 + ... + 443768608.

It is an arithmetic number, because the mean of its divisors is an integer number (615919278975).

Almost surely, 2^{16312702131508} is an apocalyptic number.

It is an amenable number.

16312702131508 is a deficient number, since it is larger than the sum of its proper divisors (13251423259292).

16312702131508 is a wasteful number, since it uses less digits than its factorization.

16312702131508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40900 (or 40898 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 40.

Adding to 16312702131508 its reverse (80513120721361), we get a palindrome (96825822852869).

The spelling of 16312702131508 in words is "sixteen trillion, three hundred twelve billion, seven hundred two million, one hundred thirty-one thousand, five hundred eight".