7975439989776 has 800 divisors, whose sum is σ = 27334455244800. Its totient is φ = 2243850336000.

The previous prime is 7975439989763. The next prime is 7975439989799. The reversal of 7975439989776 is 6779899345797.

7975439989776 is a `hidden beast` number, since 7 + 9 + 75 + 4 + 399 + 89 + 7 + 76 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 8793207915 + ... + 8793208821.

It is an arithmetic number, because the mean of its divisors is an integer number (34168069056).

Almost surely, 2^{7975439989776} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7975439989776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13667227622400).

7975439989776 is an abundant number, since it is smaller than the sum of its proper divisors (19359015255024).

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

7975439989776 is a wasteful number, since it uses less digits than its factorization.

7975439989776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1230 (or 1201 counting only the distinct ones).

The product of its digits is 45368527680, while the sum is 90.

The spelling of 7975439989776 in words is "seven trillion, nine hundred seventy-five billion, four hundred thirty-nine million, nine hundred eighty-nine thousand, seven hundred seventy-six".