855321369945 has 16 divisors (see below), whose sum is σ = 1564016219520. Its totient is φ = 391004054784.

The previous prime is 855321369899. The next prime is 855321369967. The reversal of 855321369945 is 549963123558.

It is a happy number.

It is not a de Polignac number, because 855321369945 - 2¹² = 855321365849 is a prime.

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, 4072958800 + ... + 4072959009.

It is an arithmetic number, because the mean of its divisors is an integer number (97751013720).

Almost surely, 2^855321369945 is an apocalyptic number.

It is an amenable number.

855321369945 is a deficient number, since it is larger than the sum of its proper divisors (708694849575).

855321369945 is a wasteful number, since it uses less digits than its factorization.

855321369945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8145917824.

The product of its digits is 34992000, while the sum is 60.

The spelling of 855321369945 in words is "eight hundred fifty-five billion, three hundred twenty-one million, three hundred sixty-nine thousand, nine hundred forty-five".