63501420331420 has 24 divisors (see below), whose sum is σ = 133355060250048. Its totient is φ = 25400172408000.

The previous prime is 63501420331381. The next prime is 63501420331463. The reversal of 63501420331420 is 2413302410536.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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, 23415231 + ... + 25986070.

It is an arithmetic number, because the mean of its divisors is an integer number (5556460843752).

Almost surely, 2^{63501420331420} is an apocalyptic number.

It is an amenable number.

63501420331420 is an abundant number, since it is smaller than the sum of its proper divisors (69853639918628).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63501420331420 is a wasteful number, since it uses less digits than its factorization.

63501420331420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49465581 (or 49465579 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 34.

Adding to 63501420331420 its reverse (2413302410536), we get a palindrome (65914722741956).

The spelling of 63501420331420 in words is "sixty-three trillion, five hundred one billion, four hundred twenty million, three hundred thirty-one thousand, four hundred twenty".