9977603021 has 16 divisors (see below), whose sum is σ = 10495733760. Its totient is φ = 9466773360.

The previous prime is 9977602993. The next prime is 9977603023. The reversal of 9977603021 is 1203067799.

It is a happy number.

9977603021 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 a de Polignac number, because none of the positive numbers 2^k-9977603021 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 (9977603023) 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, 1771616 + ... + 1777238.

It is an arithmetic number, because the mean of its divisors is an integer number (655983360).

Almost surely, 2^9977603021 is an apocalyptic number.

It is an amenable number.

9977603021 is a deficient number, since it is larger than the sum of its proper divisors (518130739).

9977603021 is a wasteful number, since it uses less digits than its factorization.

9977603021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6256.

The product of its (nonzero) digits is 142884, while the sum is 44.

The square root of 9977603021 is about 99887.9523316000. The cubic root of 9977603021 is about 2152.8250601212.

The spelling of 9977603021 in words is "nine billion, nine hundred seventy-seven million, six hundred three thousand, twenty-one".