855011655 has 12 divisors (see below), whose sum is σ = 1482020280. Its totient is φ = 456006192.

The previous prime is 855011627. The next prime is 855011681. The reversal of 855011655 is 556110558.

It is not a de Polignac number, because 855011655 - 2¹⁹ = 854487367 is a prime.

855011655 is a modest number, since divided by 11655 gives 855 as remainder.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 9500085 + ... + 9500174.

It is an arithmetic number, because the mean of its divisors is an integer number (123501690).

Almost surely, 2^855011655 is an apocalyptic number.

855011655 is a deficient number, since it is larger than the sum of its proper divisors (627008625).

855011655 is a wasteful number, since it uses less digits than its factorization.

855011655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19000270 (or 19000267 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 36.

The square root of 855011655 is about 29240.5823300426. The cubic root of 855011655 is about 949.1263084605.

The spelling of 855011655 in words is "eight hundred fifty-five million, eleven thousand, six hundred fifty-five".