165203672061 has 8 divisors (see below), whose sum is σ = 220288166560. Its totient is φ = 110127479472.

The previous prime is 165203672047. The next prime is 165203672077. The reversal of 165203672061 is 160276302561.

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

It is not a de Polignac number, because 165203672061 - 2¹¹ = 165203670013 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 (165203672561) 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, 2028895 + ... + 2108748.

It is an arithmetic number, because the mean of its divisors is an integer number (27536020820).

Almost surely, 2^165203672061 is an apocalyptic number.

It is an amenable number.

165203672061 is a deficient number, since it is larger than the sum of its proper divisors (55084494499).

165203672061 is a wasteful number, since it uses less digits than its factorization.

165203672061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4150955.

The product of its (nonzero) digits is 90720, while the sum is 39.

The spelling of 165203672061 in words is "one hundred sixty-five billion, two hundred three million, six hundred seventy-two thousand, sixty-one".