855477785394 has 32 divisors (see below), whose sum is σ = 1915573682880. Its totient is φ = 282982471200.

The previous prime is 855477785369. The next prime is 855477785443. The reversal of 855477785394 is 493587774558.

855477785394 is a `hidden beast` number, since 8 + 5 + 547 + 7 + 78 + 5 + 3 + 9 + 4 = 666.

855477785394 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60459267 + ... + 60473414.

It is an arithmetic number, because the mean of its divisors is an integer number (59861677590).

Almost surely, 2^855477785394 is an apocalyptic number.

855477785394 is an abundant number, since it is smaller than the sum of its proper divisors (1060095897486).

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

855477785394 is a wasteful number, since it uses less digits than its factorization.

855477785394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120932823 (or 120932817 counting only the distinct ones).

The product of its digits is 1185408000, while the sum is 72.

The spelling of 855477785394 in words is "eight hundred fifty-five billion, four hundred seventy-seven million, seven hundred eighty-five thousand, three hundred ninety-four".