851270078196 has 36 divisors (see below), whose sum is σ = 2152622062500. Its totient is φ = 283651135488.

The previous prime is 851270078173. The next prime is 851270078221. The reversal of 851270078196 is 691870072158.

It can be written as a sum of positive squares in 2 ways, for example, as 375418445796 + 475851632400 = 612714^2 + 689820^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×851270078196² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4300071 + ... + 4493678.

Almost surely, 2^851270078196 is an apocalyptic number.

It is an amenable number.

851270078196 is an abundant number, since it is smaller than the sum of its proper divisors (1301351984304).

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

851270078196 is a wasteful number, since it uses less digits than its factorization.

851270078196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8796448 (or 8796443 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 54.

The spelling of 851270078196 in words is "eight hundred fifty-one billion, two hundred seventy million, seventy-eight thousand, one hundred ninety-six".