9720557377 has 8 divisors (see below), whose sum is σ = 10562236160. Its totient is φ = 8911885680.

The previous prime is 9720557359. The next prime is 9720557393. The reversal of 9720557377 is 7737550279.

9720557377 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9720557377 - 2¹¹ = 9720555329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9720357377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8251158 + ... + 8252335.

It is an arithmetic number, because the mean of its divisors is an integer number (1320279520).

Almost surely, 2^9720557377 is an apocalyptic number.

It is an amenable number.

9720557377 is a deficient number, since it is larger than the sum of its proper divisors (841678783).

9720557377 is a wasteful number, since it uses less digits than its factorization.

9720557377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16503543.

The product of its (nonzero) digits is 3241350, while the sum is 52.

The square root of 9720557377 is about 98592.8870507401. The cubic root of 9720557377 is about 2134.1767747234.

The spelling of 9720557377 in words is "nine billion, seven hundred twenty million, five hundred fifty-seven thousand, three hundred seventy-seven".