87853657266 has 16 divisors (see below), whose sum is σ = 195230349600. Its totient is φ = 29284552404.

The previous prime is 87853657159. The next prime is 87853657271. The reversal of 87853657266 is 66275635878.

It is a happy number.

87853657266 is a `hidden beast` number, since 8 + 7 + 8 + 5 + 365 + 7 + 266 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 813459736 + ... + 813459843.

It is an arithmetic number, because the mean of its divisors is an integer number (12201896850).

Almost surely, 2^87853657266 is an apocalyptic number.

87853657266 is an abundant number, since it is smaller than the sum of its proper divisors (107376692334).

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

87853657266 is a wasteful number, since it uses less digits than its factorization.

87853657266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1626919590 (or 1626919584 counting only the distinct ones).

The product of its digits is 101606400, while the sum is 63.

The spelling of 87853657266 in words is "eighty-seven billion, eight hundred fifty-three million, six hundred fifty-seven thousand, two hundred sixty-six".