16434247331505 has 128 divisors (see below), whose sum is σ = 29137750686720. Its totient is φ = 7872229048320.

The previous prime is 16434247331477. The next prime is 16434247331521. The reversal of 16434247331505 is 50513374243461.

It is not a de Polignac number, because 16434247331505 - 2¹³ = 16434247323313 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 396817179 + ... + 396858591.

It is an arithmetic number, because the mean of its divisors is an integer number (227638677240).

Almost surely, 2^{16434247331505} is an apocalyptic number.

16434247331505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16434247331505 is a deficient number, since it is larger than the sum of its proper divisors (12703503355215).

16434247331505 is a wasteful number, since it uses less digits than its factorization.

16434247331505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42091.

The product of its (nonzero) digits is 3628800, while the sum is 48.

The spelling of 16434247331505 in words is "sixteen trillion, four hundred thirty-four billion, two hundred forty-seven million, three hundred thirty-one thousand, five hundred five".