9988777741 has 8 divisors (see below), whose sum is σ = 10111223520. Its totient is φ = 9866870928.

The previous prime is 9988777723. The next prime is 9988777763. The reversal of 9988777741 is 1477778899.

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 9988777741 - 2²¹ = 9986680589 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 (9988777441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97386 + ... + 171643.

It is an arithmetic number, because the mean of its divisors is an integer number (1263902940).

Almost surely, 2^9988777741 is an apocalyptic number.

It is an amenable number.

9988777741 is a deficient number, since it is larger than the sum of its proper divisors (122445779).

9988777741 is a wasteful number, since it uses less digits than its factorization.

9988777741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269483.

The product of its digits is 49787136, while the sum is 67.

The square root of 9988777741 is about 99943.8729537734. The cubic root of 9988777741 is about 2153.6284675657.

The spelling of 9988777741 in words is "nine billion, nine hundred eighty-eight million, seven hundred seventy-seven thousand, seven hundred forty-one".