9977143662 has 24 divisors (see below), whose sum is σ = 21782166120. Its totient is φ = 3300326640.

The previous prime is 9977143609. The next prime is 9977143679. The reversal of 9977143662 is 2663417799.

It is a happy number.

9977143662 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 9977143599 and 9977143608.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 2113237 + ... + 2117952.

It is an arithmetic number, because the mean of its divisors is an integer number (907590255).

Almost surely, 2^9977143662 is an apocalyptic number.

9977143662 is an abundant number, since it is smaller than the sum of its proper divisors (11805022458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9977143662 is a wasteful number, since it uses less digits than its factorization.

9977143662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4231328 (or 4231325 counting only the distinct ones).

The product of its digits is 3429216, while the sum is 54.

The square root of 9977143662 is about 99885.6529337422. The cubic root of 9977143662 is about 2152.7920216335.

The spelling of 9977143662 in words is "nine billion, nine hundred seventy-seven million, one hundred forty-three thousand, six hundred sixty-two".