63921347039 has 8 divisors (see below), whose sum is σ = 69756567168. Its totient is φ = 58090158360.

The previous prime is 63921347033. The next prime is 63921347041. The reversal of 63921347039 is 93074312936.

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 63921347039 - 2²⁸ = 63652911583 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 63921346984 and 63921347002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63921347033) 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 7 ways as a sum of consecutive naturals, for example, 974657 + ... + 1038170.

It is an arithmetic number, because the mean of its divisors is an integer number (8719570896).

Almost surely, 2^63921347039 is an apocalyptic number.

63921347039 is a deficient number, since it is larger than the sum of its proper divisors (5835220129).

63921347039 is a wasteful number, since it uses less digits than its factorization.

63921347039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2015725.

The product of its (nonzero) digits is 734832, while the sum is 47.

The spelling of 63921347039 in words is "sixty-three billion, nine hundred twenty-one million, three hundred forty-seven thousand, thirty-nine".