63275351621 has 8 divisors (see below), whose sum is σ = 63533574720. Its totient is φ = 63017639872.

The previous prime is 63275351603. The next prime is 63275351639. The reversal of 63275351621 is 12615357236.

It is an interprime number because it is at equal distance from previous prime (63275351603) and next prime (63275351639).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63275351621 is a prime.

It is a super-2 number, since 2×63275351621² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63275354621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121136 + ... + 375798.

It is an arithmetic number, because the mean of its divisors is an integer number (7941696840).

Almost surely, 2^63275351621 is an apocalyptic number.

It is an amenable number.

63275351621 is a deficient number, since it is larger than the sum of its proper divisors (258223099).

63275351621 is a wasteful number, since it uses less digits than its factorization.

63275351621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255675.

The product of its digits is 226800, while the sum is 41.

The spelling of 63275351621 in words is "sixty-three billion, two hundred seventy-five million, three hundred fifty-one thousand, six hundred twenty-one".