855380791903 has 6 divisors (see below), whose sum is σ = 940211944952. Its totient is φ = 777618901620.

The previous prime is 855380791871. The next prime is 855380791927. The reversal of 855380791903 is 309197083558.

855380791903 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 855380791903 - 2⁵ = 855380791871 is a prime.

It is a super-2 number, since 2×855380791903² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855380791973) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3534631251 + ... + 3534631492.

Almost surely, 2^855380791903 is an apocalyptic number.

855380791903 is a deficient number, since it is larger than the sum of its proper divisors (84831153049).

855380791903 is a wasteful number, since it uses less digits than its factorization.

855380791903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7069262765 (or 7069262754 counting only the distinct ones).

The product of its (nonzero) digits is 8164800, while the sum is 58.

The spelling of 855380791903 in words is "eight hundred fifty-five billion, three hundred eighty million, seven hundred ninety-one thousand, nine hundred three".