720173887488 has 520 divisors, whose sum is σ = 2404689010416. Its totient is φ = 212867481600.

The previous prime is 720173887481. The next prime is 720173887507. The reversal of 720173887488 is 884788371027.

720173887488 is a `hidden beast` number, since 7 + 2 + 0 + 1 + 73 + 8 + 87 + 488 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720173887481) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 149628570 + ... + 149633382.

Almost surely, 2^720173887488 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 720173887488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1202344505208).

720173887488 is an abundant number, since it is smaller than the sum of its proper divisors (1684515122928).

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

720173887488 is a wasteful number, since it uses less digits than its factorization.

720173887488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4901 (or 4870 counting only the distinct ones).

The product of its (nonzero) digits is 33718272, while the sum is 63.

The spelling of 720173887488 in words is "seven hundred twenty billion, one hundred seventy-three million, eight hundred eighty-seven thousand, four hundred eighty-eight".