7872788872787 has 16 divisors (see below), whose sum is σ = 8497451424672. Its totient is φ = 7266217920000.

The previous prime is 7872788872771. The next prime is 7872788872799.

It is a happy number.

7872788872787 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 7872788872787 - 2⁴ = 7872788872771 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7872788872699 and 7872788872708.

It is not an unprimeable number, because it can be changed into a prime (7872788872747) 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, 408464 + ... + 3989037.

It is an arithmetic number, because the mean of its divisors is an integer number (531090714042).

Almost surely, 2^{7872788872787} is an apocalyptic number.

7872788872787 is a deficient number, since it is larger than the sum of its proper divisors (624662551885).

7872788872787 is a wasteful number, since it uses less digits than its factorization.

7872788872787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4399558.

The product of its digits is 15420489728, while the sum is 86.

The spelling of 7872788872787 in words is "seven trillion, eight hundred seventy-two billion, seven hundred eighty-eight million, eight hundred seventy-two thousand, seven hundred eighty-seven".