16464281047 has 4 divisors (see below), whose sum is σ = 16471286496. Its totient is φ = 16457275600.

The previous prime is 16464281011. The next prime is 16464281063. The reversal of 16464281047 is 74018246461.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74018246461 = 6977 ⋅10608893.

It is a cyclic number.

It is not a de Polignac number, because 16464281047 - 2¹⁵ = 16464248279 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16464280994 and 16464281012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16464281087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3499198 + ... + 3503899.

It is an arithmetic number, because the mean of its divisors is an integer number (4117821624).

Almost surely, 2^16464281047 is an apocalyptic number.

16464281047 is a deficient number, since it is larger than the sum of its proper divisors (7005449).

16464281047 is an equidigital number, since it uses as much as digits as its factorization.

16464281047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7005448.

The product of its (nonzero) digits is 258048, while the sum is 43.

The spelling of 16464281047 in words is "sixteen billion, four hundred sixty-four million, two hundred eighty-one thousand, forty-seven".