851072352117 has 16 divisors (see below), whose sum is σ = 1226370831168. Its totient is φ = 521886165120.

The previous prime is 851072352107. The next prime is 851072352157. The reversal of 851072352117 is 711253270158.

It is not a de Polignac number, because 851072352117 - 2⁷ = 851072351989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (851072352107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38544384 + ... + 38566457.

It is an arithmetic number, because the mean of its divisors is an integer number (76648176948).

Almost surely, 2^851072352117 is an apocalyptic number.

It is an amenable number.

851072352117 is a deficient number, since it is larger than the sum of its proper divisors (375298479051).

851072352117 is a wasteful number, since it uses less digits than its factorization.

851072352117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77111140.

The product of its (nonzero) digits is 117600, while the sum is 42.

The spelling of 851072352117 in words is "eight hundred fifty-one billion, seventy-two million, three hundred fifty-two thousand, one hundred seventeen".