16552766399 has 8 divisors (see below), whose sum is σ = 17847622800. Its totient is φ = 15260990976.

The previous prime is 16552766387. The next prime is 16552766401. The reversal of 16552766399 is 99366725561.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 16552766399 - 2¹⁶ = 16552700863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16552766359) 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, 759074 + ... + 780575.

It is an arithmetic number, because the mean of its divisors is an integer number (2230952850).

Almost surely, 2^16552766399 is an apocalyptic number.

16552766399 is a deficient number, since it is larger than the sum of its proper divisors (1294856401).

16552766399 is a wasteful number, since it uses less digits than its factorization.

16552766399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1540489.

The product of its digits is 18370800, while the sum is 59.

The spelling of 16552766399 in words is "sixteen billion, five hundred fifty-two million, seven hundred sixty-six thousand, three hundred ninety-nine".