165716667061 has 8 divisors (see below), whose sum is σ = 180963156384. Its totient is φ = 150500400720.

The previous prime is 165716667059. The next prime is 165716667073. The reversal of 165716667061 is 160766617561.

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

It is a cyclic number.

It is not a de Polignac number, because 165716667061 - 2¹ = 165716667059 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165716662061) 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, 7544275 + ... + 7566208.

It is an arithmetic number, because the mean of its divisors is an integer number (22620394548).

Almost surely, 2^165716667061 is an apocalyptic number.

165716667061 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

165716667061 is a deficient number, since it is larger than the sum of its proper divisors (15246489323).

165716667061 is a wasteful number, since it uses less digits than its factorization.

165716667061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15111491.

The product of its (nonzero) digits is 1905120, while the sum is 52.

The spelling of 165716667061 in words is "one hundred sixty-five billion, seven hundred sixteen million, six hundred sixty-seven thousand, sixty-one".