16156160661 has 8 divisors (see below), whose sum is σ = 21653162560. Its totient is φ = 10714966272.

The previous prime is 16156160633. The next prime is 16156160707. The reversal of 16156160661 is 16606165161.

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

It is not a de Polignac number, because 16156160661 - 2¹⁵ = 16156127893 is a prime.

It is a super-2 number, since 2×16156160661² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16156160261) 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, 13951201 + ... + 13952358.

It is an arithmetic number, because the mean of its divisors is an integer number (2706645320).

Almost surely, 2^16156160661 is an apocalyptic number.

It is an amenable number.

16156160661 is a deficient number, since it is larger than the sum of its proper divisors (5497001899).

16156160661 is a wasteful number, since it uses less digits than its factorization.

16156160661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27903755.

The product of its (nonzero) digits is 38880, while the sum is 39.

It can be divided in two parts, 161561 and 60661, that added together give a palindrome (222222).

The spelling of 16156160661 in words is "sixteen billion, one hundred fifty-six million, one hundred sixty thousand, six hundred sixty-one".