7087888721868 has 12 divisors (see below), whose sum is σ = 16538407017720. Its totient is φ = 2362629573952.

The previous prime is 7087888721867. The next prime is 7087888721923. The reversal of 7087888721868 is 8681278887807.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×7087888721868² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7087888721793 and 7087888721802.

It is not an unprimeable number, because it can be changed into a prime (7087888721867) 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 3 ways as a sum of consecutive naturals, for example, 295328696733 + ... + 295328696756.

It is an arithmetic number, because the mean of its divisors is an integer number (1378200584810).

Almost surely, 2^{7087888721868} is an apocalyptic number.

It is an amenable number.

7087888721868 is an abundant number, since it is smaller than the sum of its proper divisors (9450518295852).

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

7087888721868 is a wasteful number, since it uses less digits than its factorization.

7087888721868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 590657393496 (or 590657393494 counting only the distinct ones).

The product of its (nonzero) digits is 1078984704, while the sum is 78.

The spelling of 7087888721868 in words is "seven trillion, eighty-seven billion, eight hundred eighty-eight million, seven hundred twenty-one thousand, eight hundred sixty-eight".