16656515151 has 16 divisors (see below), whose sum is σ = 22345887744. Its totient is φ = 11035940864.

The previous prime is 16656515093. The next prime is 16656515177. The reversal of 16656515151 is 15151565661.

It is a cyclic number.

It is not a de Polignac number, because 16656515151 - 2⁹ = 16656514639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16656515251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 317170 + ... + 365936.

It is an arithmetic number, because the mean of its divisors is an integer number (1396617984).

Almost surely, 2^16656515151 is an apocalyptic number.

16656515151 is a deficient number, since it is larger than the sum of its proper divisors (5689372593).

16656515151 is a wasteful number, since it uses less digits than its factorization.

16656515151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49470.

The product of its digits is 135000, while the sum is 42.

The spelling of 16656515151 in words is "sixteen billion, six hundred fifty-six million, five hundred fifteen thousand, one hundred fifty-one".