7989945202000 has 80 divisors (see below), whose sum is σ = 19320307952400. Its totient is φ = 3195875443200.

The previous prime is 7989945201971. The next prime is 7989945202007. The reversal of 7989945202000 is 2025499897.

It can be written as a sum of positive squares in 8 ways, for example, as 35040844864 + 7954904357136 = 187192^2 + 2820444^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7989945202007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106340446 + ... + 106415554.

It is an arithmetic number, because the mean of its divisors is an integer number (241503849405).

Almost surely, 2^{7989945202000} is an apocalyptic number.

It is an amenable number.

7989945202000 is an abundant number, since it is smaller than the sum of its proper divisors (11330362750400).

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

7989945202000 is a wasteful number, since it uses less digits than its factorization.

7989945202000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128321 (or 128305 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 55.

The spelling of 7989945202000 in words is "seven trillion, nine hundred eighty-nine billion, nine hundred forty-five million, two hundred two thousand".