851593051872 has 144 divisors (see below), whose sum is σ = 2528105344128. Its totient is φ = 271404714240.

The previous prime is 851593051867. The next prime is 851593051877. The reversal of 851593051872 is 278150395158.

851593051872 is a `hidden beast` number, since 8 + 5 + 1 + 59 + 3 + 0 + 518 + 72 = 666.

It is an interprime number because it is at equal distance from previous prime (851593051867) and next prime (851593051877).

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (851593051877) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15943803 + ... + 15997125.

It is an arithmetic number, because the mean of its divisors is an integer number (17556287112).

Almost surely, 2^851593051872 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 851593051872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1264052672064).

851593051872 is an abundant number, since it is smaller than the sum of its proper divisors (1676512292256).

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

851593051872 is a wasteful number, since it uses less digits than its factorization.

851593051872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55773 (or 55762 counting only the distinct ones).

The product of its (nonzero) digits is 3024000, while the sum is 54.

The spelling of 851593051872 in words is "eight hundred fifty-one billion, five hundred ninety-three million, fifty-one thousand, eight hundred seventy-two".