9877765541 has 16 divisors (see below), whose sum is σ = 11795321088. Its totient is φ = 8087798400.

The previous prime is 9877765529. The next prime is 9877765571. The reversal of 9877765541 is 1455677789.

9877765541 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 9877765541 - 2²² = 9873571237 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9877765571) 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 15 ways as a sum of consecutive naturals, for example, 82211 + ... + 162831.

It is an arithmetic number, because the mean of its divisors is an integer number (737207568).

Almost surely, 2^9877765541 is an apocalyptic number.

It is an amenable number.

9877765541 is a deficient number, since it is larger than the sum of its proper divisors (1917555547).

9877765541 is a wasteful number, since it uses less digits than its factorization.

9877765541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81412.

The product of its digits is 14817600, while the sum is 59.

The square root of 9877765541 is about 99386.9485445649. The cubic root of 9877765541 is about 2145.6204732184.

The spelling of 9877765541 in words is "nine billion, eight hundred seventy-seven million, seven hundred sixty-five thousand, five hundred forty-one".