63661463718720 has 224 divisors, whose sum is σ = 235714458720000. Its totient is φ = 14551191631872.

The previous prime is 63661463718661. The next prime is 63661463718733. The reversal of 63661463718720 is 2781736416636.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 96338395 + ... + 96996954.

Almost surely, 2^{63661463718720} is an apocalyptic number.

63661463718720 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

63661463718720 is an abundant number, since it is smaller than the sum of its proper divisors (172052995001280).

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

63661463718720 is a wasteful number, since it uses less digits than its factorization.

63661463718720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193335390 (or 193335366 counting only the distinct ones).

The product of its (nonzero) digits is 36578304, while the sum is 60.

The spelling of 63661463718720 in words is "sixty-three trillion, six hundred sixty-one billion, four hundred sixty-three million, seven hundred eighteen thousand, seven hundred twenty".