63481502447 has 16 divisors (see below), whose sum is σ = 69938013600. Its totient is φ = 57141411840.

The previous prime is 63481502443. The next prime is 63481502449. The reversal of 63481502447 is 74420518436.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 63481502447 - 2² = 63481502443 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 63481502398 and 63481502407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63481502443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 532079 + ... + 640367.

It is an arithmetic number, because the mean of its divisors is an integer number (4371125850).

Almost surely, 2^63481502447 is an apocalyptic number.

63481502447 is a deficient number, since it is larger than the sum of its proper divisors (6456511153).

63481502447 is a wasteful number, since it uses less digits than its factorization.

63481502447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108826.

The product of its (nonzero) digits is 645120, while the sum is 44.

The spelling of 63481502447 in words is "sixty-three billion, four hundred eighty-one million, five hundred two thousand, four hundred forty-seven".