63128572516 has 9 divisors (see below), whose sum is σ = 110475881299. Its totient is φ = 31564035004.

The previous prime is 63128572511. The next prime is 63128572519. The reversal of 63128572516 is 61527582136.

The square root of 63128572516 is 251254.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63128572511) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 439695 + ... + 565321.

Almost surely, 2^63128572516 is an apocalyptic number.

63128572516 is the 251254-th square number.

It is an amenable number.

63128572516 is a deficient number, since it is larger than the sum of its proper divisors (47347308783).

63128572516 is an frugal number, since it uses more digits than its factorization.

63128572516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251258 (or 125629 counting only the distinct ones).

The product of its digits is 604800, while the sum is 46.

The spelling of 63128572516 in words is "sixty-three billion, one hundred twenty-eight million, five hundred seventy-two thousand, five hundred sixteen".