16500042478 has 32 divisors (see below), whose sum is σ = 27842356800. Its totient is φ = 7294339584.

The previous prime is 16500042443. The next prime is 16500042479. The reversal of 16500042478 is 87424000561.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16500042479) 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 15 ways as a sum of consecutive naturals, for example, 189658 + ... + 262621.

It is an arithmetic number, because the mean of its divisors is an integer number (870073650).

Almost surely, 2^16500042478 is an apocalyptic number.

16500042478 is a deficient number, since it is larger than the sum of its proper divisors (11342314322).

16500042478 is a wasteful number, since it uses less digits than its factorization.

16500042478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452364.

The product of its (nonzero) digits is 53760, while the sum is 37.

The spelling of 16500042478 in words is "sixteen billion, five hundred million, forty-two thousand, four hundred seventy-eight".