16044691977 has 24 divisors (see below), whose sum is σ = 24052619136. Its totient is φ = 10688185872.

The previous prime is 16044691963. The next prime is 16044692003. The reversal of 16044691977 is 77919644061.

16044691977 is a `hidden beast` number, since 1 + 6 + 0 + 446 + 9 + 197 + 7 = 666.

It is not a de Polignac number, because 16044691977 - 2⁶ = 16044691913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16044691937) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 297583 + ... + 347339.

It is an arithmetic number, because the mean of its divisors is an integer number (1002192464).

Almost surely, 2^16044691977 is an apocalyptic number.

It is an amenable number.

16044691977 is a deficient number, since it is larger than the sum of its proper divisors (8007927159).

16044691977 is an equidigital number, since it uses as much as digits as its factorization.

16044691977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51099 (or 51087 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 54.

The spelling of 16044691977 in words is "sixteen billion, forty-four million, six hundred ninety-one thousand, nine hundred seventy-seven".