16445650507 has 48 divisors (see below), whose sum is σ = 20993081760. Its totient is φ = 12754368000.

The previous prime is 16445650477. The next prime is 16445650531. The reversal of 16445650507 is 70505654461.

It is not a de Polignac number, because 16445650507 - 2⁷ = 16445650379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16445650547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1218657 + ... + 1232077.

It is an arithmetic number, because the mean of its divisors is an integer number (437355870).

Almost surely, 2^16445650507 is an apocalyptic number.

16445650507 is a deficient number, since it is larger than the sum of its proper divisors (4547431253).

16445650507 is a wasteful number, since it uses less digits than its factorization.

16445650507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13516 (or 13505 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 43.

The spelling of 16445650507 in words is "sixteen billion, four hundred forty-five million, six hundred fifty thousand, five hundred seven".