16155671615 has 16 divisors (see below), whose sum is σ = 20246839488. Its totient is φ = 12352133376.

The previous prime is 16155671579. The next prime is 16155671617. The reversal of 16155671615 is 51617655161.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 16155671615 - 2¹⁴ = 16155655231 is a prime.

It is a super-2 number, since 2×16155671615² (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 (16155671617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78317 + ... + 196073.

It is an arithmetic number, because the mean of its divisors is an integer number (1265427468).

Almost surely, 2^16155671615 is an apocalyptic number.

16155671615 is a deficient number, since it is larger than the sum of its proper divisors (4091167873).

16155671615 is a wasteful number, since it uses less digits than its factorization.

16155671615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118978.

The product of its digits is 189000, while the sum is 44.

The spelling of 16155671615 in words is "sixteen billion, one hundred fifty-five million, six hundred seventy-one thousand, six hundred fifteen".