53212220446663 has 4 divisors (see below), whose sum is σ = 54216224606088. Its totient is φ = 52208216287240.

The previous prime is 53212220446639. The next prime is 53212220446709. The reversal of 53212220446663 is 36664402221235.

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 53212220446663 - 2¹³ = 53212220438471 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 (53212220446633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 502002079633 + ... + 502002079738.

It is an arithmetic number, because the mean of its divisors is an integer number (13554056151522).

Almost surely, 2^{53212220446663} is an apocalyptic number.

53212220446663 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

53212220446663 is a deficient number, since it is larger than the sum of its proper divisors (1004004159425).

53212220446663 is a wasteful number, since it uses less digits than its factorization.

53212220446663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1004004159424.

The product of its (nonzero) digits is 2488320, while the sum is 46.

Adding to 53212220446663 its reverse (36664402221235), we get a palindrome (89876622667898).

The spelling of 53212220446663 in words is "fifty-three trillion, two hundred twelve billion, two hundred twenty million, four hundred forty-six thousand, six hundred sixty-three".