852244140781 has 4 divisors (see below), whose sum is σ = 929720880864. Its totient is φ = 774767400700.

The previous prime is 852244140751. The next prime is 852244140809. The reversal of 852244140781 is 187041442258.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 852244140781 - 2¹⁹ = 852243616493 is a prime.

It is a super-2 number, since 2×852244140781² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (852244140701) 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, 38738370025 + ... + 38738370046.

It is an arithmetic number, because the mean of its divisors is an integer number (232430220216).

Almost surely, 2^852244140781 is an apocalyptic number.

It is an amenable number.

852244140781 is a deficient number, since it is larger than the sum of its proper divisors (77476740083).

852244140781 is a wasteful number, since it uses less digits than its factorization.

852244140781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77476740082.

The product of its (nonzero) digits is 573440, while the sum is 46.

The spelling of 852244140781 in words is "eight hundred fifty-two billion, two hundred forty-four million, one hundred forty thousand, seven hundred eighty-one".