16434247431505 has 16 divisors (see below), whose sum is σ = 19781318139264. Its totient is φ = 13107253040640.

The previous prime is 16434247431491. The next prime is 16434247431509. The reversal of 16434247431505 is 50513474243461.

It is not a de Polignac number, because 16434247431505 - 2⁷ = 16434247431377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16434247431509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57091297 + ... + 57378433.

It is an arithmetic number, because the mean of its divisors is an integer number (1236332383704).

Almost surely, 2^{16434247431505} is an apocalyptic number.

It is an amenable number.

16434247431505 is a deficient number, since it is larger than the sum of its proper divisors (3347070707759).

16434247431505 is a wasteful number, since it uses less digits than its factorization.

16434247431505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322056.

The product of its (nonzero) digits is 4838400, while the sum is 49.

The spelling of 16434247431505 in words is "sixteen trillion, four hundred thirty-four billion, two hundred forty-seven million, four hundred thirty-one thousand, five hundred five".