801958533066 has 24 divisors (see below), whose sum is σ = 1749238416900. Its totient is φ = 265525419456.

The previous prime is 801958533059. The next prime is 801958533091. The reversal of 801958533066 is 660335859108.

It can be written as a sum of positive squares in 2 ways, for example, as 778416233841 + 23542299225 = 882279^2 + 153435^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 149504875 + ... + 149510238.

Almost surely, 2^801958533066 is an apocalyptic number.

801958533066 is an abundant number, since it is smaller than the sum of its proper divisors (947279883834).

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

801958533066 is a wasteful number, since it uses less digits than its factorization.

801958533066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299015270 (or 299015267 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 54.

The spelling of 801958533066 in words is "eight hundred one billion, nine hundred fifty-eight million, five hundred thirty-three thousand, sixty-six".