63959538898943 has 8 divisors (see below), whose sum is σ = 68758294897920. Its totient is φ = 59304029347800.

The previous prime is 63959538898919. The next prime is 63959538898993. The reversal of 63959538898943 is 34989883595936.

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

It is a cyclic number.

It is not a de Polignac number, because 63959538898943 - 2¹² = 63959538894847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63959538898993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35811611033 + ... + 35811612818.

It is an arithmetic number, because the mean of its divisors is an integer number (8594786862240).

Almost surely, 2^{63959538898943} is an apocalyptic number.

63959538898943 is a deficient number, since it is larger than the sum of its proper divisors (4798755998977).

63959538898943 is a wasteful number, since it uses less digits than its factorization.

63959538898943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71623223917.

The product of its digits is 54419558400, while the sum is 89.

The spelling of 63959538898943 in words is "sixty-three trillion, nine hundred fifty-nine billion, five hundred thirty-eight million, eight hundred ninety-eight thousand, nine hundred forty-three".