63451730216620 has 48 divisors (see below), whose sum is σ = 133769233684800. Its totient is φ = 25281565771520.

The previous prime is 63451730216599. The next prime is 63451730216653. The reversal of 63451730216620 is 2661203715436.

It is a happy number.

63451730216620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×63451730216620² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 27451665 + ... + 29673175.

It is an arithmetic number, because the mean of its divisors is an integer number (2786859035100).

Almost surely, 2^{63451730216620} is an apocalyptic number.

It is an amenable number.

63451730216620 is an abundant number, since it is smaller than the sum of its proper divisors (70317503468180).

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

63451730216620 is a wasteful number, since it uses less digits than its factorization.

63451730216620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2227098 (or 2227096 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 46.

The spelling of 63451730216620 in words is "sixty-three trillion, four hundred fifty-one billion, seven hundred thirty million, two hundred sixteen thousand, six hundred twenty".