16165142255651 has 8 divisors (see below), whose sum is σ = 16372335851520. Its totient is φ = 15958012948488.

The previous prime is 16165142255611. The next prime is 16165142255687. The reversal of 16165142255651 is 15655224156161.

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 a de Polignac number, because none of the positive numbers 2^k-16165142255651 is a prime.

It is a super-2 number, since 2×16165142255651² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16165142255651.

It is not an unprimeable number, because it can be changed into a prime (16165142255611) 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, 15565961 + ... + 16571946.

It is an arithmetic number, because the mean of its divisors is an integer number (2046541981440).

Almost surely, 2^{16165142255651} is an apocalyptic number.

16165142255651 is a deficient number, since it is larger than the sum of its proper divisors (207193595869).

16165142255651 is an equidigital number, since it uses as much as digits as its factorization.

16165142255651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32144353.

The product of its digits is 2160000, while the sum is 50.

The spelling of 16165142255651 in words is "sixteen trillion, one hundred sixty-five billion, one hundred forty-two million, two hundred fifty-five thousand, six hundred fifty-one".