855572375649 has 8 divisors (see below), whose sum is σ = 1165034724480. Its totient is φ = 558245805296.

The previous prime is 855572375587. The next prime is 855572375659. The reversal of 855572375649 is 946573275558.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 855572375649 - 2⁷ = 855572375521 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 855572375649.

It is not an unprimeable number, because it can be changed into a prime (855572375659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3033944454 + ... + 3033944735.

It is an arithmetic number, because the mean of its divisors is an integer number (145629340560).

Almost surely, 2^855572375649 is an apocalyptic number.

It is an amenable number.

855572375649 is a deficient number, since it is larger than the sum of its proper divisors (309462348831).

855572375649 is a wasteful number, since it uses less digits than its factorization.

855572375649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6067889239.

The product of its digits is 317520000, while the sum is 66.

The spelling of 855572375649 in words is "eight hundred fifty-five billion, five hundred seventy-two million, three hundred seventy-five thousand, six hundred forty-nine".