16522796641 has 8 divisors (see below), whose sum is σ = 17814082664. Its totient is φ = 15234410880.

The previous prime is 16522796639. The next prime is 16522796669. The reversal of 16522796641 is 14669722561.

It can be written as a sum of positive squares in 4 ways, for example, as 54464400 + 16468332241 = 7380^2 + 128329^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16522796641 - 2¹ = 16522796639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16522796441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 713220 + ... + 736021.

It is an arithmetic number, because the mean of its divisors is an integer number (2226760333).

Almost surely, 2^16522796641 is an apocalyptic number.

It is an amenable number.

16522796641 is a deficient number, since it is larger than the sum of its proper divisors (1291286023).

16522796641 is a wasteful number, since it uses less digits than its factorization.

16522796641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1450131.

The product of its digits is 1088640, while the sum is 49.

The spelling of 16522796641 in words is "sixteen billion, five hundred twenty-two million, seven hundred ninety-six thousand, six hundred forty-one".