165716667050 has 48 divisors (see below), whose sum is σ = 340305531552. Its totient is φ = 59534558400.

The previous prime is 165716667013. The next prime is 165716667059. The reversal of 165716667050 is 50766617561.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 165716667050.

It is not an unprimeable number, because it can be changed into a prime (165716667059) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1769429 + ... + 1860728.

It is an arithmetic number, because the mean of its divisors is an integer number (7089698574).

Almost surely, 2^165716667050 is an apocalyptic number.

165716667050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165716667050 is an abundant number, since it is smaller than the sum of its proper divisors (174588864502).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165716667050 is a wasteful number, since it uses less digits than its factorization.

165716667050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3630263 (or 3630258 counting only the distinct ones).

The product of its (nonzero) digits is 1587600, while the sum is 50.

The spelling of 165716667050 in words is "one hundred sixty-five billion, seven hundred sixteen million, six hundred sixty-seven thousand, fifty".