855557344492 has 12 divisors (see below), whose sum is σ = 1497232055536. Its totient is φ = 427776757200.

The previous prime is 855557344483. The next prime is 855557344493. The reversal of 855557344492 is 294443755558.

It is a self number, because there is not a number n which added to its sum of digits gives 855557344492.

It is not an unprimeable number, because it can be changed into a prime (855557344493) 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 3 ways as a sum of consecutive naturals, for example, 1118617 + ... + 1721167.

Almost surely, 2^855557344492 is an apocalyptic number.

It is an amenable number.

855557344492 is a deficient number, since it is larger than the sum of its proper divisors (641674711044).

855557344492 is a wasteful number, since it uses less digits than its factorization.

855557344492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 957528 (or 957526 counting only the distinct ones).

The product of its digits is 120960000, while the sum is 61.

The spelling of 855557344492 in words is "eight hundred fifty-five billion, five hundred fifty-seven million, three hundred forty-four thousand, four hundred ninety-two".