16521423046 has 8 divisors (see below), whose sum is σ = 25027502544. Its totient is φ = 8178922200.

The previous prime is 16521423031. The next prime is 16521423067. The reversal of 16521423046 is 64032412561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40894410 + ... + 40894813.

It is an arithmetic number, because the mean of its divisors is an integer number (3128437818).

Almost surely, 2^16521423046 is an apocalyptic number.

16521423046 is a deficient number, since it is larger than the sum of its proper divisors (8506079498).

16521423046 is a wasteful number, since it uses less digits than its factorization.

16521423046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81789326.

The product of its (nonzero) digits is 34560, while the sum is 34.

The spelling of 16521423046 in words is "sixteen billion, five hundred twenty-one million, four hundred twenty-three thousand, forty-six".