63504521345 has 16 divisors (see below), whose sum is σ = 77172661440. Its totient is φ = 50159573184.

The previous prime is 63504521341. The next prime is 63504521369. The reversal of 63504521345 is 54312540536.

It is a cyclic number.

It is not a de Polignac number, because 63504521345 - 2² = 63504521341 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 63504521299 and 63504521308.

It is not an unprimeable number, because it can be changed into a prime (63504521341) 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, 614846 + ... + 710664.

It is an arithmetic number, because the mean of its divisors is an integer number (4823291340).

Almost surely, 2^63504521345 is an apocalyptic number.

It is an amenable number.

63504521345 is a deficient number, since it is larger than the sum of its proper divisors (13668140095).

63504521345 is a wasteful number, since it uses less digits than its factorization.

63504521345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97504.

The product of its (nonzero) digits is 216000, while the sum is 38.

The spelling of 63504521345 in words is "sixty-three billion, five hundred four million, five hundred twenty-one thousand, three hundred forty-five".