16539131395492 has 12 divisors (see below), whose sum is σ = 29268687582540. Its totient is φ = 8176649229056.

The previous prime is 16539131395463. The next prime is 16539131395529. The reversal of 16539131395492 is 29459313193561.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5241425621056 + 11297705774436 = 2289416^2 + 3361206^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 16539131395492.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23229116773 + ... + 23229117484.

It is an arithmetic number, because the mean of its divisors is an integer number (2439057298545).

Almost surely, 2^{16539131395492} is an apocalyptic number.

It is an amenable number.

16539131395492 is a deficient number, since it is larger than the sum of its proper divisors (12729556187048).

16539131395492 is a wasteful number, since it uses less digits than its factorization.

16539131395492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46458234350 (or 46458234348 counting only the distinct ones).

The product of its digits is 23619600, while the sum is 61.

The spelling of 16539131395492 in words is "sixteen trillion, five hundred thirty-nine billion, one hundred thirty-one million, three hundred ninety-five thousand, four hundred ninety-two".