827761225399 has 4 divisors (see below), whose sum is σ = 856304715960. Its totient is φ = 799217734840.

The previous prime is 827761225391. The next prime is 827761225441. The reversal of 827761225399 is 993522167728.

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 827761225399 - 2³ = 827761225391 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 (827761225391) 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 3 ways as a sum of consecutive naturals, for example, 14271745237 + ... + 14271745294.

It is an arithmetic number, because the mean of its divisors is an integer number (214076178990).

Almost surely, 2^827761225399 is an apocalyptic number.

827761225399 is a deficient number, since it is larger than the sum of its proper divisors (28543490561).

827761225399 is a wasteful number, since it uses less digits than its factorization.

827761225399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28543490560.

The product of its digits is 22861440, while the sum is 61.

The spelling of 827761225399 in words is "eight hundred twenty-seven billion, seven hundred sixty-one million, two hundred twenty-five thousand, three hundred ninety-nine".