801263587228591 has 4 divisors (see below), whose sum is σ = 805895168657832. Its totient is φ = 796632005799352.

The previous prime is 801263587228583. The next prime is 801263587228597. The reversal of 801263587228591 is 195822785362108.

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

It is a cyclic number.

It is not a de Polignac number, because 801263587228591 - 2³ = 801263587228583 is a prime.

It is a Smith number, since the sum of its digits (67) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (801263587228597) 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, 2315790714361 + ... + 2315790714706.

It is an arithmetic number, because the mean of its divisors is an integer number (201473792164458).

Almost surely, 2^{801263587228591} is an apocalyptic number.

801263587228591 is a deficient number, since it is larger than the sum of its proper divisors (4631581429241).

801263587228591 is a wasteful number, since it uses less digits than its factorization.

801263587228591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4631581429240.

The product of its (nonzero) digits is 116121600, while the sum is 67.

The spelling of 801263587228591 in words is "eight hundred one trillion, two hundred sixty-three billion, five hundred eighty-seven million, two hundred twenty-eight thousand, five hundred ninety-one".