63573520345 has 32 divisors (see below), whose sum is σ = 81493032960. Its totient is φ = 47469240000.

The previous prime is 63573520343. The next prime is 63573520363. The reversal of 63573520345 is 54302537536.

It is not a de Polignac number, because 63573520345 - 2¹ = 63573520343 is a prime.

It is a super-2 number, since 2×63573520345² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (63573520343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13157080 + ... + 13161910.

It is an arithmetic number, because the mean of its divisors is an integer number (2546657280).

Almost surely, 2^63573520345 is an apocalyptic number.

It is an amenable number.

63573520345 is a deficient number, since it is larger than the sum of its proper divisors (17919512615).

63573520345 is a wasteful number, since it uses less digits than its factorization.

63573520345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6877.

The product of its (nonzero) digits is 1134000, while the sum is 43.

The spelling of 63573520345 in words is "sixty-three billion, five hundred seventy-three million, five hundred twenty thousand, three hundred forty-five".