63555120461 has 16 divisors (see below), whose sum is σ = 75802791168. Its totient is φ = 52100188800.

The previous prime is 63555120443. The next prime is 63555120509. The reversal of 63555120461 is 16402155536.

It is not a de Polignac number, because 63555120461 - 2⁶ = 63555120397 is a prime.

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 (63555126461) 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 15 ways as a sum of consecutive naturals, for example, 1384721 + ... + 1429881.

It is an arithmetic number, because the mean of its divisors is an integer number (4737674448).

Almost surely, 2^63555120461 is an apocalyptic number.

It is an amenable number.

63555120461 is a deficient number, since it is larger than the sum of its proper divisors (12247670707).

63555120461 is a wasteful number, since it uses less digits than its factorization.

63555120461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53932.

The product of its (nonzero) digits is 108000, while the sum is 38.

Adding to 63555120461 its reverse (16402155536), we get a palindrome (79957275997).

The spelling of 63555120461 in words is "sixty-three billion, five hundred fifty-five million, one hundred twenty thousand, four hundred sixty-one".