63506247373 has 4 divisors (see below), whose sum is σ = 63511628800. Its totient is φ = 63500865948.

The previous prime is 63506247317. The next prime is 63506247377. The reversal of 63506247373 is 37374260536.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 63506247373 - 2⁹ = 63506246861 is a prime.

It is a super-2 number, since 2×63506247373² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63506247377) 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, 2672973 + ... + 2696626.

It is an arithmetic number, because the mean of its divisors is an integer number (15877907200).

Almost surely, 2^63506247373 is an apocalyptic number.

It is an amenable number.

63506247373 is a deficient number, since it is larger than the sum of its proper divisors (5381427).

63506247373 is a wasteful number, since it uses less digits than its factorization.

63506247373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5381426.

The product of its (nonzero) digits is 1905120, while the sum is 46.

The spelling of 63506247373 in words is "sixty-three billion, five hundred six million, two hundred forty-seven thousand, three hundred seventy-three".