63286823821 has 4 divisors (see below), whose sum is σ = 68155041052. Its totient is φ = 58418606592.

The previous prime is 63286823819. The next prime is 63286823869. The reversal of 63286823821 is 12832868236.

63286823821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2952726921 + 60334096900 = 54339^2 + 245630^2 .

It is a cyclic number.

It is not a de Polignac number, because 63286823821 - 2¹ = 63286823819 is a prime.

It is a super-3 number, since 3×63286823821³ (a number of 33 digits) contains 333 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 (63286823021) 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, 2434108596 + ... + 2434108621.

It is an arithmetic number, because the mean of its divisors is an integer number (17038760263).

Almost surely, 2^63286823821 is an apocalyptic number.

It is an amenable number.

63286823821 is a deficient number, since it is larger than the sum of its proper divisors (4868217231).

63286823821 is a wasteful number, since it uses less digits than its factorization.

63286823821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4868217230.

The product of its digits is 1327104, while the sum is 49.

The spelling of 63286823821 in words is "sixty-three billion, two hundred eighty-six million, eight hundred twenty-three thousand, eight hundred twenty-one".