9964388862020 has 24 divisors (see below), whose sum is σ = 21370433986944. Its totient is φ = 3900952234976.

The previous prime is 9964388861927. The next prime is 9964388862023. The reversal of 9964388862020 is 202688834699.

It is not an unprimeable number, because it can be changed into a prime (9964388862023) 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, 5300205902 + ... + 5300207781.

It is an arithmetic number, because the mean of its divisors is an integer number (890434749456).

Almost surely, 2^{9964388862020} is an apocalyptic number.

It is an amenable number.

9964388862020 is an abundant number, since it is smaller than the sum of its proper divisors (11406045124924).

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

9964388862020 is a wasteful number, since it uses less digits than its factorization.

9964388862020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10600413739 (or 10600413737 counting only the distinct ones).

The product of its (nonzero) digits is 71663616, while the sum is 65.

The spelling of 9964388862020 in words is "nine trillion, nine hundred sixty-four billion, three hundred eighty-eight million, eight hundred sixty-two thousand, twenty".