16771025521 has 16 divisors (see below), whose sum is σ = 17971891200. Its totient is φ = 15594270208.

The previous prime is 16771025503. The next prime is 16771025527. The reversal of 16771025521 is 12552017761.

It is a cyclic number.

It is not a de Polignac number, because 16771025521 - 2⁵ = 16771025489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16771025527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2173356 + ... + 2181058.

It is an arithmetic number, because the mean of its divisors is an integer number (1123243200).

Almost surely, 2^16771025521 is an apocalyptic number.

It is an amenable number.

16771025521 is a deficient number, since it is larger than the sum of its proper divisors (1200865679).

16771025521 is a wasteful number, since it uses less digits than its factorization.

16771025521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9248.

The product of its (nonzero) digits is 29400, while the sum is 37.

The spelling of 16771025521 in words is "sixteen billion, seven hundred seventy-one million, twenty-five thousand, five hundred twenty-one".