63812019245 has 8 divisors (see below), whose sum is σ = 82464763416. Its totient is φ = 47122721856.

The previous prime is 63812019217. The next prime is 63812019287. The reversal of 63812019245 is 54291021836.

It can be written as a sum of positive squares in 4 ways, for example, as 284833129 + 63527186116 = 16877^2 + 252046^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 63812019245 - 2²⁴ = 63795242029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 490861622 + ... + 490861751.

It is an arithmetic number, because the mean of its divisors is an integer number (10308095427).

Almost surely, 2^63812019245 is an apocalyptic number.

63812019245 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

63812019245 is a deficient number, since it is larger than the sum of its proper divisors (18652744171).

63812019245 is a wasteful number, since it uses less digits than its factorization.

63812019245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981723391.

The product of its (nonzero) digits is 103680, while the sum is 41.

The spelling of 63812019245 in words is "sixty-three billion, eight hundred twelve million, nineteen thousand, two hundred forty-five".