855641974453 has 16 divisors (see below), whose sum is σ = 1004410082944. Its totient is φ = 713511374400.

The previous prime is 855641974427. The next prime is 855641974457. The reversal of 855641974453 is 354479146558.

It is a de Polignac number, because none of the positive numbers 2^k-855641974453 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 855641974391 and 855641974400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855641974457) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2397526 + ... + 2731192.

It is an arithmetic number, because the mean of its divisors is an integer number (62775630184).

Almost surely, 2^855641974453 is an apocalyptic number.

It is an amenable number.

855641974453 is a deficient number, since it is larger than the sum of its proper divisors (148768108491).

855641974453 is a wasteful number, since it uses less digits than its factorization.

855641974453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343612.

The product of its digits is 72576000, while the sum is 61.

The spelling of 855641974453 in words is "eight hundred fifty-five billion, six hundred forty-one million, nine hundred seventy-four thousand, four hundred fifty-three".