16432461215605 has 4 divisors (see below), whose sum is σ = 19718953458732. Its totient is φ = 13145968972480.

The previous prime is 16432461215507. The next prime is 16432461215627. The reversal of 16432461215605 is 50651216423461.

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 2590326083601 + 13842135132004 = 1609449^2 + 3720502^2 .

It is not a de Polignac number, because 16432461215605 - 2⁷ = 16432461215477 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 1643246121556 + ... + 1643246121565.

It is an arithmetic number, because the mean of its divisors is an integer number (4929738364683).

Almost surely, 2^{16432461215605} is an apocalyptic number.

It is an amenable number.

16432461215605 is a deficient number, since it is larger than the sum of its proper divisors (3286492243127).

16432461215605 is an equidigital number, since it uses as much as digits as its factorization.

16432461215605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3286492243126.

The product of its (nonzero) digits is 1036800, while the sum is 46.

The spelling of 16432461215605 in words is "sixteen trillion, four hundred thirty-two billion, four hundred sixty-one million, two hundred fifteen thousand, six hundred five".