73663776560 has 160 divisors (see below), whose sum is σ = 192358616832. Its totient is φ = 25998935040.

The previous prime is 73663776547. The next prime is 73663776601. The reversal of 73663776560 is 6567736637.

It is a junction number, because it is equal to n+sod(n) for n = 73663776496 and 73663776505.

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, 14421527 + ... + 14426633.

Almost surely, 2^73663776560 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 73663776560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96179308416).

73663776560 is an abundant number, since it is smaller than the sum of its proper divisors (118694840272).

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

73663776560 is a wasteful number, since it uses less digits than its factorization.

73663776560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5611 (or 5605 counting only the distinct ones).

The product of its (nonzero) digits is 20003760, while the sum is 56.

The spelling of 73663776560 in words is "seventy-three billion, six hundred sixty-three million, seven hundred seventy-six thousand, five hundred sixty".