7989210164440 has 32 divisors (see below), whose sum is σ = 17981249053680. Its totient is φ = 3194701633152.

The previous prime is 7989210164431. The next prime is 7989210164471. The reversal of 7989210164440 is 444610129897.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30569274 + ... + 30829513.

Almost surely, 2^{7989210164440} is an apocalyptic number.

It is an amenable number.

7989210164440 is an abundant number, since it is smaller than the sum of its proper divisors (9992038889240).

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

7989210164440 is a wasteful number, since it uses less digits than its factorization.

7989210164440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61402051 (or 61402047 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 55.

The spelling of 7989210164440 in words is "seven trillion, nine hundred eighty-nine billion, two hundred ten million, one hundred sixty-four thousand, four hundred forty".