9977359851 has 12 divisors (see below), whose sum is σ = 14444279928. Its totient is φ = 6636555744.

The previous prime is 9977359849. The next prime is 9977359867. The reversal of 9977359851 is 1589537799.

It is not a de Polignac number, because 9977359851 - 2¹ = 9977359849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9977359351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1247250 + ... + 1255223.

It is an arithmetic number, because the mean of its divisors is an integer number (1203689994).

Almost surely, 2^9977359851 is an apocalyptic number.

9977359851 is a deficient number, since it is larger than the sum of its proper divisors (4466920077).

9977359851 is a wasteful number, since it uses less digits than its factorization.

9977359851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2502922 (or 2502919 counting only the distinct ones).

The product of its digits is 21432600, while the sum is 63.

The square root of 9977359851 is about 99886.7351103238. The cubic root of 9977359851 is about 2152.8075707262.

The spelling of 9977359851 in words is "nine billion, nine hundred seventy-seven million, three hundred fifty-nine thousand, eight hundred fifty-one".