16399949673177 has 48 divisors (see below), whose sum is σ = 28436344534080. Its totient is φ = 9313906440384.

The previous prime is 16399949673103. The next prime is 16399949673199. The reversal of 16399949673177 is 77137694999361.

16399949673177 is a `hidden beast` number, since 1 + 6 + 3 + 9 + 99 + 496 + 7 + 31 + 7 + 7 = 666.

It is not a de Polignac number, because 16399949673177 - 2²⁶ = 16399882564313 is a prime.

It is a super-2 number, since 2×16399949673177² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16399949673096 and 16399949673105.

It is not an unprimeable number, because it can be changed into a prime (16399949671177) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 37808988 + ... + 38240285.

It is an arithmetic number, because the mean of its divisors is an integer number (592423844460).

Almost surely, 2^{16399949673177} is an apocalyptic number.

It is an amenable number.

16399949673177 is a deficient number, since it is larger than the sum of its proper divisors (12036394860903).

16399949673177 is a wasteful number, since it uses less digits than its factorization.

16399949673177 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76049459 (or 76049446 counting only the distinct ones).

The product of its digits is 2916548208, while the sum is 81.

The spelling of 16399949673177 in words is "sixteen trillion, three hundred ninety-nine billion, nine hundred forty-nine million, six hundred seventy-three thousand, one hundred seventy-seven".