63533100628081 has 12 divisors (see below), whose sum is σ = 73913350116708. Its totient is φ = 54451418284032.

The previous prime is 63533100628073. The next prime is 63533100628091. The reversal of 63533100628081 is 18082600133536.

It can be written as a sum of positive squares in 2 ways, for example, as 27961717197456 + 35571383430625 = 5287884^2 + 5964175^2 .

It is not a de Polignac number, because 63533100628081 - 2³ = 63533100628073 is a prime.

It is a super-2 number, since 2×63533100628081² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63533100628031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65287216 + ... + 66253201.

It is an arithmetic number, because the mean of its divisors is an integer number (6159445843059).

Almost surely, 2^{63533100628081} is an apocalyptic number.

It is an amenable number.

63533100628081 is a deficient number, since it is larger than the sum of its proper divisors (10380249488627).

63533100628081 is a wasteful number, since it uses less digits than its factorization.

63533100628081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131550288 (or 131550281 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 46.

The spelling of 63533100628081 in words is "sixty-three trillion, five hundred thirty-three billion, one hundred million, six hundred twenty-eight thousand, eighty-one".