65850166272 has 176 divisors, whose sum is σ = 197650197504. Its totient is φ = 19310592000.

The previous prime is 65850166271. The next prime is 65850166289. The reversal of 65850166272 is 27266105856.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (176).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (65850166271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1016122 + ... + 1078982.

Almost surely, 2^65850166272 is an apocalyptic number.

65850166272 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65850166272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98825098752).

65850166272 is an abundant number, since it is smaller than the sum of its proper divisors (131800031232).

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

65850166272 is a wasteful number, since it uses less digits than its factorization.

65850166272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62926 (or 62908 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 48.

The spelling of 65850166272 in words is "sixty-five billion, eight hundred fifty million, one hundred sixty-six thousand, two hundred seventy-two".