16512426445 has 4 divisors (see below), whose sum is σ = 19814911740. Its totient is φ = 13209941152.

The previous prime is 16512426421. The next prime is 16512426457. The reversal of 16512426445 is 54462421561.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8922880521 + 7589545924 = 94461^2 + 87118^2 .

It is a cyclic number.

It is not a de Polignac number, because 16512426445 - 2⁹ = 16512425933 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16512426398 and 16512426407.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1651242640 + ... + 1651242649.

It is an arithmetic number, because the mean of its divisors is an integer number (4953727935).

Almost surely, 2^16512426445 is an apocalyptic number.

It is an amenable number.

16512426445 is a deficient number, since it is larger than the sum of its proper divisors (3302485295).

16512426445 is an equidigital number, since it uses as much as digits as its factorization.

16512426445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3302485294.

The product of its digits is 230400, while the sum is 40.

The spelling of 16512426445 in words is "sixteen billion, five hundred twelve million, four hundred twenty-six thousand, four hundred forty-five".