8720716193280 has 1920 divisors, whose sum is σ = 38884359241728. Its totient is φ = 1823982354432.

The previous prime is 8720716193263. The next prime is 8720716193309. The reversal of 8720716193280 is 823916170278.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (1920).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 7189377954 + ... + 7189379166.

Almost surely, 2^{8720716193280} is an apocalyptic number.

8720716193280 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8720716193280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19442179620864).

8720716193280 is an abundant number, since it is smaller than the sum of its proper divisors (30163643048448).

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

8720716193280 is a wasteful number, since it uses less digits than its factorization.

8720716193280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1398 (or 1370 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 54.

The spelling of 8720716193280 in words is "eight trillion, seven hundred twenty billion, seven hundred sixteen million, one hundred ninety-three thousand, two hundred eighty".