63457531673 has 4 divisors (see below), whose sum is σ = 63463477968. Its totient is φ = 63451585380.

The previous prime is 63457531639. The next prime is 63457531699. The reversal of 63457531673 is 37613575436.

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 63457531673 - 2²⁴ = 63440754457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63457531633) 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, 2957111 + ... + 2978492.

It is an arithmetic number, because the mean of its divisors is an integer number (15865869492).

Almost surely, 2^63457531673 is an apocalyptic number.

It is an amenable number.

63457531673 is a deficient number, since it is larger than the sum of its proper divisors (5946295).

63457531673 is a wasteful number, since it uses less digits than its factorization.

63457531673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5946294.

The product of its digits is 4762800, while the sum is 50.

The spelling of 63457531673 in words is "sixty-three billion, four hundred fifty-seven million, five hundred thirty-one thousand, six hundred seventy-three".