16449570776 has 8 divisors (see below), whose sum is σ = 30842945220. Its totient is φ = 8224785384.

The previous prime is 16449570743. The next prime is 16449570779. The reversal of 16449570776 is 67707594461.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16449570779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1028098166 + ... + 1028098181.

Almost surely, 2^16449570776 is an apocalyptic number.

It is an amenable number.

16449570776 is a deficient number, since it is larger than the sum of its proper divisors (14393374444).

16449570776 is a wasteful number, since it uses less digits than its factorization.

16449570776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2056196353 (or 2056196349 counting only the distinct ones).

The product of its (nonzero) digits is 8890560, while the sum is 56.

The spelling of 16449570776 in words is "sixteen billion, four hundred forty-nine million, five hundred seventy thousand, seven hundred seventy-six".