855471507783 has 16 divisors (see below), whose sum is σ = 1210829199840. Its totient is φ = 535386561536.

The previous prime is 855471507773. The next prime is 855471507797. The reversal of 855471507783 is 387705174558.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 855471507783 - 2¹⁰ = 855471506759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855471507713) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 21540510 + ... + 21580187.

It is an arithmetic number, because the mean of its divisors is an integer number (75676824990).

Almost surely, 2^855471507783 is an apocalyptic number.

855471507783 is a deficient number, since it is larger than the sum of its proper divisors (355357692057).

855471507783 is a wasteful number, since it uses less digits than its factorization.

855471507783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43121106.

The product of its (nonzero) digits is 32928000, while the sum is 60.

The spelling of 855471507783 in words is "eight hundred fifty-five billion, four hundred seventy-one million, five hundred seven thousand, seven hundred eighty-three".