63551055313 has 4 divisors (see below), whose sum is σ = 63595529140. Its totient is φ = 63506581488.

The previous prime is 63551055301. The next prime is 63551055371. The reversal of 63551055313 is 31355015536.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6891822289 + 56659233024 = 83017^2 + 238032^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63551055313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63551055013) 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 3 ways as a sum of consecutive naturals, for example, 22234770 + ... + 22237627.

It is an arithmetic number, because the mean of its divisors is an integer number (15898882285).

Almost surely, 2^63551055313 is an apocalyptic number.

It is an amenable number.

63551055313 is a deficient number, since it is larger than the sum of its proper divisors (44473827).

63551055313 is a wasteful number, since it uses less digits than its factorization.

63551055313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44473826.

The product of its (nonzero) digits is 101250, while the sum is 37.

The spelling of 63551055313 in words is "sixty-three billion, five hundred fifty-one million, fifty-five thousand, three hundred thirteen".