9928555557757 has 4 divisors (see below), whose sum is σ = 10139801420736. Its totient is φ = 9717309694780.

The previous prime is 9928555557733. The next prime is 9928555557821. The reversal of 9928555557757 is 7577555558299.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9928555557757 - 2³¹ = 9926408074109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9928555557727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105622931419 + ... + 105622931512.

It is an arithmetic number, because the mean of its divisors is an integer number (2534950355184).

Almost surely, 2^{9928555557757} is an apocalyptic number.

It is an amenable number.

9928555557757 is a deficient number, since it is larger than the sum of its proper divisors (211245862979).

9928555557757 is a wasteful number, since it uses less digits than its factorization.

9928555557757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211245862978.

The product of its digits is 6945750000, while the sum is 79.

The spelling of 9928555557757 in words is "nine trillion, nine hundred twenty-eight billion, five hundred fifty-five million, five hundred fifty-seven thousand, seven hundred fifty-seven".