801633650166 has 96 divisors (see below), whose sum is σ = 1852664643648. Its totient is φ = 249634252800.

The previous prime is 801633650131. The next prime is 801633650203. The reversal of 801633650166 is 661056336108.

801633650166 is a `hidden beast` number, since 8 + 0 + 1 + 633 + 6 + 5 + 0 + 1 + 6 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 37447066 + ... + 37468466.

It is an arithmetic number, because the mean of its divisors is an integer number (19298590038).

Almost surely, 2^801633650166 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 801633650166, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (926332321824).

801633650166 is an abundant number, since it is smaller than the sum of its proper divisors (1051030993482).

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

801633650166 is a wasteful number, since it uses less digits than its factorization.

801633650166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22326 (or 22323 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The spelling of 801633650166 in words is "eight hundred one billion, six hundred thirty-three million, six hundred fifty thousand, one hundred sixty-six".