16939546505 has 16 divisors (see below), whose sum is σ = 23669708544. Its totient is φ = 11396523840.

The previous prime is 16939546471. The next prime is 16939546543. The reversal of 16939546505 is 50564593961.

It is not a de Polignac number, because 16939546505 - 2⁶ = 16939546441 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4564061 + ... + 4567770.

It is an arithmetic number, because the mean of its divisors is an integer number (1479356784).

Almost surely, 2^16939546505 is an apocalyptic number.

It is an amenable number.

16939546505 is a deficient number, since it is larger than the sum of its proper divisors (6730162039).

16939546505 is an equidigital number, since it uses as much as digits as its factorization.

16939546505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9131896.

The product of its (nonzero) digits is 4374000, while the sum is 53.

The spelling of 16939546505 in words is "sixteen billion, nine hundred thirty-nine million, five hundred forty-six thousand, five hundred five".