7885885887 has 24 divisors (see below), whose sum is σ = 12762094800. Its totient is φ = 4650151680.

The previous prime is 7885885877. The next prime is 7885885919.

7885885887 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 7885885887 - 2¹⁶ = 7885820351 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7885885877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1072762 + ... + 1080087.

It is an arithmetic number, because the mean of its divisors is an integer number (531753950).

Almost surely, 2^7885885887 is an apocalyptic number.

7885885887 is a deficient number, since it is larger than the sum of its proper divisors (4876208913).

7885885887 is a wasteful number, since it uses less digits than its factorization.

7885885887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2152903 (or 2152900 counting only the distinct ones).

The product of its digits is 321126400, while the sum is 72.

The square root of 7885885887 is about 88802.5105895098. The cubic root of 7885885887 is about 1990.4449134418. Note that the first 3 decimals are identical.

The spelling of 7885885887 in words is "seven billion, eight hundred eighty-five million, eight hundred eighty-five thousand, eight hundred eighty-seven".