16530447445742 has 4 divisors (see below), whose sum is σ = 24795671168616. Its totient is φ = 8265223722870.

The previous prime is 16530447445739. The next prime is 16530447445747. The reversal of 16530447445742 is 24754474403561.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16530447445747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4132611861434 + ... + 4132611861437.

It is an arithmetic number, because the mean of its divisors is an integer number (6198917792154).

Almost surely, 2^{16530447445742} is an apocalyptic number.

16530447445742 is a deficient number, since it is larger than the sum of its proper divisors (8265223722874).

16530447445742 is an equidigital number, since it uses as much as digits as its factorization.

16530447445742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8265223722873.

The product of its (nonzero) digits is 45158400, while the sum is 56.

The spelling of 16530447445742 in words is "sixteen trillion, five hundred thirty billion, four hundred forty-seven million, four hundred forty-five thousand, seven hundred forty-two".