87766666663375 has 32 divisors (see below), whose sum is σ = 125207228704896. Its totient is φ = 60169931251200.

The previous prime is 87766666663373. The next prime is 87766666663441. The reversal of 87766666663375 is 57336666666778.

It is not a de Polignac number, because 87766666663375 - 2¹ = 87766666663373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87766666663373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6694372 + ... + 14844121.

It is an arithmetic number, because the mean of its divisors is an integer number (3912725897028).

Almost surely, 2^{87766666663375} is an apocalyptic number.

87766666663375 is a deficient number, since it is larger than the sum of its proper divisors (37440562041521).

87766666663375 is a wasteful number, since it uses less digits than its factorization.

87766666663375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21543172 (or 21543162 counting only the distinct ones).

The product of its digits is 34566497280, while the sum is 82.

The spelling of 87766666663375 in words is "eighty-seven trillion, seven hundred sixty-six billion, six hundred sixty-six million, six hundred sixty-three thousand, three hundred seventy-five".