8720771747331 has 64 divisors (see below), whose sum is σ = 13751601152000. Its totient is φ = 4913066340000.

The previous prime is 8720771747323. The next prime is 8720771747333. The reversal of 8720771747331 is 1337471770278.

It is not a de Polignac number, because 8720771747331 - 2³ = 8720771747323 is a prime.

It is a super-2 number, since 2×8720771747331² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8720771747333) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 56094456 + ... + 56249706.

It is an arithmetic number, because the mean of its divisors is an integer number (214868768000).

Almost surely, 2^{8720771747331} is an apocalyptic number.

8720771747331 is a deficient number, since it is larger than the sum of its proper divisors (5030829404669).

8720771747331 is a wasteful number, since it uses less digits than its factorization.

8720771747331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156045 (or 156031 counting only the distinct ones).

The product of its (nonzero) digits is 9680832, while the sum is 57.

The spelling of 8720771747331 in words is "eight trillion, seven hundred twenty billion, seven hundred seventy-one million, seven hundred forty-seven thousand, three hundred thirty-one".