855200104177331 has 8 divisors (see below), whose sum is σ = 940655862146928. Its totient is φ = 777454640160000.

The previous prime is 855200104177303. The next prime is 855200104177339. The reversal of 855200104177331 is 133771401002558.

It is a de Polignac number, because none of the positive numbers 2^k-855200104177331 is a prime.

It is a super-2 number, since 2×855200104177331² (a number of 31 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (855200104177339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 321262246670 + ... + 321262249331.

It is an arithmetic number, because the mean of its divisors is an integer number (117581982768366).

Almost surely, 2^{855200104177331} is an apocalyptic number.

855200104177331 is a deficient number, since it is larger than the sum of its proper divisors (85455757969597).

855200104177331 is an equidigital number, since it uses as much as digits as its factorization.

855200104177331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642524496034 (or 642524496012 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 47.

Adding to 855200104177331 its reverse (133771401002558), we get a palindrome (988971505179889).

The spelling of 855200104177331 in words is "eight hundred fifty-five trillion, two hundred billion, one hundred four million, one hundred seventy-seven thousand, three hundred thirty-one".