63521644742734 has 8 divisors (see below), whose sum is σ = 95301876879720. Its totient is φ = 31754352449496.

The previous prime is 63521644742671. The next prime is 63521644742767. The reversal of 63521644742734 is 43724744612536.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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, 3234948664 + ... + 3234968299.

It is an arithmetic number, because the mean of its divisors is an integer number (11912734609965).

Almost surely, 2^{63521644742734} is an apocalyptic number.

63521644742734 is a deficient number, since it is larger than the sum of its proper divisors (31780232136986).

63521644742734 is a wasteful number, since it uses less digits than its factorization.

63521644742734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6469921874.

The product of its digits is 81285120, while the sum is 58.

The spelling of 63521644742734 in words is "sixty-three trillion, five hundred twenty-one billion, six hundred forty-four million, seven hundred forty-two thousand, seven hundred thirty-four".