7933811489128 has 64 divisors (see below), whose sum is σ = 17501025369600. Its totient is φ = 3300631234560.

The previous prime is 7933811489081. The next prime is 7933811489129. The reversal of 7933811489128 is 8219841183397.

It is a self number, because there is not a number n which added to its sum of digits gives 7933811489128.

It is not an unprimeable number, because it can be changed into a prime (7933811489129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3549033 + ... + 5335096.

It is an arithmetic number, because the mean of its divisors is an integer number (273453521400).

Almost surely, 2^{7933811489128} is an apocalyptic number.

It is an amenable number.

7933811489128 is an abundant number, since it is smaller than the sum of its proper divisors (9567213880472).

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

7933811489128 is a wasteful number, since it uses less digits than its factorization.

7933811489128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8884610 (or 8884606 counting only the distinct ones).

The product of its digits is 20901888, while the sum is 64.

The spelling of 7933811489128 in words is "seven trillion, nine hundred thirty-three billion, eight hundred eleven million, four hundred eighty-nine thousand, one hundred twenty-eight".