16612122565 has 8 divisors (see below), whose sum is σ = 20174722848. Its totient is φ = 13129580880.

The previous prime is 16612122563. The next prime is 16612122581. The reversal of 16612122565 is 56522121661.

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

It is not a de Polignac number, because 16612122565 - 2¹ = 16612122563 is a prime.

It is a super-2 number, since 2×16612122565² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16612122563) 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, 20014191 + ... + 20015020.

It is an arithmetic number, because the mean of its divisors is an integer number (2521840356).

Almost surely, 2^16612122565 is an apocalyptic number.

It is an amenable number.

16612122565 is a deficient number, since it is larger than the sum of its proper divisors (3562600283).

16612122565 is an equidigital number, since it uses as much as digits as its factorization.

16612122565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40029299.

The product of its digits is 43200, while the sum is 37.

The spelling of 16612122565 in words is "sixteen billion, six hundred twelve million, one hundred twenty-two thousand, five hundred sixty-five".