16163252779 has 4 divisors (see below), whose sum is σ = 16286636520. Its totient is φ = 16039869040.

The previous prime is 16163252771. The next prime is 16163252821. The reversal of 16163252779 is 97725236161.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16163252779 - 2³ = 16163252771 is a prime.

It is a super-2 number, since 2×16163252779² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16163252771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61691674 + ... + 61691935.

It is an arithmetic number, because the mean of its divisors is an integer number (4071659130).

Almost surely, 2^16163252779 is an apocalyptic number.

16163252779 is a deficient number, since it is larger than the sum of its proper divisors (123383741).

16163252779 is a wasteful number, since it uses less digits than its factorization.

16163252779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123383740.

The product of its digits is 952560, while the sum is 49.

The spelling of 16163252779 in words is "sixteen billion, one hundred sixty-three million, two hundred fifty-two thousand, seven hundred seventy-nine".