801082278089855 has 4 divisors (see below), whose sum is σ = 961298733707832. Its totient is φ = 640865822471880.

The previous prime is 801082278089843. The next prime is 801082278089857. The reversal of 801082278089855 is 558980872280108.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-801082278089855 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (801082278089857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80108227808981 + ... + 80108227808990.

It is an arithmetic number, because the mean of its divisors is an integer number (240324683426958).

Almost surely, 2^{801082278089855} is an apocalyptic number.

801082278089855 is a deficient number, since it is larger than the sum of its proper divisors (160216455617977).

801082278089855 is a wasteful number, since it uses less digits than its factorization.

801082278089855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160216455617976.

The product of its (nonzero) digits is 206438400, while the sum is 71.

The spelling of 801082278089855 in words is "eight hundred one trillion, eighty-two billion, two hundred seventy-eight million, eighty-nine thousand, eight hundred fifty-five".