855171070735632 has 640 divisors, whose sum is σ = 2770415028756480. Its totient is φ = 221863090176000.

The previous prime is 855171070735607. The next prime is 855171070735643. The reversal of 855171070735632 is 236537070171558.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 13619294157 + ... + 13619356947.

It is an arithmetic number, because the mean of its divisors is an integer number (4328773482432).

Almost surely, 2^{855171070735632} is an apocalyptic number.

855171070735632 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 855171070735632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1385207514378240).

855171070735632 is an abundant number, since it is smaller than the sum of its proper divisors (1915243958020848).

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

855171070735632 is a wasteful number, since it uses less digits than its factorization.

855171070735632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63783 (or 63777 counting only the distinct ones).

The product of its (nonzero) digits is 37044000, while the sum is 60.

The spelling of 855171070735632 in words is "eight hundred fifty-five trillion, one hundred seventy-one billion, seventy million, seven hundred thirty-five thousand, six hundred thirty-two".