16377473691 has 6 divisors (see below), whose sum is σ = 23656350900. Its totient is φ = 10918315788.

The previous prime is 16377473599. The next prime is 16377473711. The reversal of 16377473691 is 19637477361.

16377473691 is a `hidden beast` number, since 16 + 3 + 77 + 473 + 6 + 91 = 666.

16377473691 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-16377473691 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16377473591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 909859641 + ... + 909859658.

It is an arithmetic number, because the mean of its divisors is an integer number (3942725150).

Almost surely, 2^16377473691 is an apocalyptic number.

16377473691 is a deficient number, since it is larger than the sum of its proper divisors (7278877209).

16377473691 is a wasteful number, since it uses less digits than its factorization.

16377473691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1819719305 (or 1819719302 counting only the distinct ones).

The product of its digits is 4000752, while the sum is 54.

The spelling of 16377473691 in words is "sixteen billion, three hundred seventy-seven million, four hundred seventy-three thousand, six hundred ninety-one".