16506146499 has 16 divisors (see below), whose sum is σ = 22559631360. Its totient is φ = 10728728640.

The previous prime is 16506146497. The next prime is 16506146519. The reversal of 16506146499 is 99464160561.

It is a happy number.

It is not a de Polignac number, because 16506146499 - 2¹ = 16506146497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16506146497) 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, 149922 + ... + 235560.

It is an arithmetic number, because the mean of its divisors is an integer number (1409976960).

Almost surely, 2^16506146499 is an apocalyptic number.

16506146499 is a deficient number, since it is larger than the sum of its proper divisors (6053484861).

16506146499 is a wasteful number, since it uses less digits than its factorization.

16506146499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87250.

The product of its (nonzero) digits is 1399680, while the sum is 51.

The spelling of 16506146499 in words is "sixteen billion, five hundred six million, one hundred forty-six thousand, four hundred ninety-nine".