813827252877 has 8 divisors (see below), whose sum is σ = 1085109785664. Its totient is φ = 542548111008.

The previous prime is 813827252801. The next prime is 813827252881. The reversal of 813827252877 is 778252728318.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 813827252877 - 2³⁵ = 779467514509 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 813827252877.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813827252977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221673 + ... + 1294910.

It is an arithmetic number, because the mean of its divisors is an integer number (135638723208).

Almost surely, 2^813827252877 is an apocalyptic number.

It is an amenable number.

813827252877 is a deficient number, since it is larger than the sum of its proper divisors (271282532787).

813827252877 is a wasteful number, since it uses less digits than its factorization.

813827252877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1695459.

The product of its digits is 21073920, while the sum is 60.

The spelling of 813827252877 in words is "eight hundred thirteen billion, eight hundred twenty-seven million, two hundred fifty-two thousand, eight hundred seventy-seven".