63611556482401 has 4 divisors (see below), whose sum is σ = 65805058430100. Its totient is φ = 61418054534704.

The previous prime is 63611556482381. The next prime is 63611556482429. The reversal of 63611556482401 is 10428465511636.

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 52204887837025 + 11406668645376 = 7225295^2 + 3377376^2 .

It is a cyclic number.

It is not a de Polignac number, because 63611556482401 - 2⁷ = 63611556482273 is a prime.

It is a super-2 number, since 2×63611556482401² (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 (63611556482491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1096750973806 + ... + 1096750973863.

It is an arithmetic number, because the mean of its divisors is an integer number (16451264607525).

Almost surely, 2^{63611556482401} is an apocalyptic number.

It is an amenable number.

63611556482401 is a deficient number, since it is larger than the sum of its proper divisors (2193501947699).

63611556482401 is a wasteful number, since it uses less digits than its factorization.

63611556482401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2193501947698.

The product of its (nonzero) digits is 4147200, while the sum is 52.

The spelling of 63611556482401 in words is "sixty-three trillion, six hundred eleven billion, five hundred fifty-six million, four hundred eighty-two thousand, four hundred one".