801566211255 has 32 divisors (see below), whose sum is σ = 1291136931840. Its totient is φ = 424625587200.

The previous prime is 801566211247. The next prime is 801566211293. The reversal of 801566211255 is 552112665108.

It is not a de Polignac number, because 801566211255 - 2³ = 801566211247 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39783714 + ... + 39803856.

It is an arithmetic number, because the mean of its divisors is an integer number (40348029120).

Almost surely, 2^801566211255 is an apocalyptic number.

801566211255 is a deficient number, since it is larger than the sum of its proper divisors (489570720585).

801566211255 is a wasteful number, since it uses less digits than its factorization.

801566211255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37871.

The product of its (nonzero) digits is 144000, while the sum is 42.

The spelling of 801566211255 in words is "eight hundred one billion, five hundred sixty-six million, two hundred eleven thousand, two hundred fifty-five".