63344235562661 has 4 divisors (see below), whose sum is σ = 63345117117324. Its totient is φ = 63343354008000.

The previous prime is 63344235562639. The next prime is 63344235562703. The reversal of 63344235562661 is 16626553244336.

It is a happy number.

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 960997893025 + 62383237669636 = 980305^2 + 7898306^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63344235562661 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 63344235562597 and 63344235562606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63344235562061) 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, 440669540 + ... + 440813261.

It is an arithmetic number, because the mean of its divisors is an integer number (15836279279331).

Almost surely, 2^{63344235562661} is an apocalyptic number.

It is an amenable number.

63344235562661 is a deficient number, since it is larger than the sum of its proper divisors (881554663).

63344235562661 is an equidigital number, since it uses as much as digits as its factorization.

63344235562661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 881554662.

The product of its digits is 55987200, while the sum is 56.

The spelling of 63344235562661 in words is "sixty-three trillion, three hundred forty-four billion, two hundred thirty-five million, five hundred sixty-two thousand, six hundred sixty-one".