855185501540392 has 256 divisors, whose sum is σ = 1995244281676800. Its totient is φ = 338490690048000.

The previous prime is 855185501540371. The next prime is 855185501540413. The reversal of 855185501540392 is 293045105581558.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (855185501540371) and next prime (855185501540413).

It is a self number, because there is not a number n which added to its sum of digits gives 855185501540392.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 9314584167 + ... + 9314675977.

It is an arithmetic number, because the mean of its divisors is an integer number (7793922975300).

Almost surely, 2^{855185501540392} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 855185501540392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (997622140838400).

855185501540392 is an abundant number, since it is smaller than the sum of its proper divisors (1140058780136408).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

855185501540392 is a wasteful number, since it uses less digits than its factorization.

855185501540392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99528 (or 99524 counting only the distinct ones).

The product of its (nonzero) digits is 43200000, while the sum is 61.

The spelling of 855185501540392 in words is "eight hundred fifty-five trillion, one hundred eighty-five billion, five hundred one million, five hundred forty thousand, three hundred ninety-two".