855787807744 has 33 divisors (see below), whose sum is σ = 1710799063977. Its totient is φ = 427879102464.

The previous prime is 855787807739. The next prime is 855787807769. The reversal of 855787807744 is 447708787558.

The square root of 855787807744 is 925088.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 854722438144 + 1065369600 = 924512^2 + 32640^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 29588362 + ... + 29617270.

Almost surely, 2^855787807744 is an apocalyptic number.

855787807744 is the 925088-th square number.

It is an amenable number.

855787807744 is a deficient number, since it is larger than the sum of its proper divisors (855011256233).

855787807744 is an frugal number, since it uses more digits than its factorization.

855787807744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57838 (or 28911 counting only the distinct ones).

The product of its (nonzero) digits is 491724800, while the sum is 70.

The spelling of 855787807744 in words is "eight hundred fifty-five billion, seven hundred eighty-seven million, eight hundred seven thousand, seven hundred forty-four".