851745547158 has 48 divisors (see below), whose sum is σ = 1918101508848. Its totient is φ = 251809465600.

The previous prime is 851745547157. The next prime is 851745547181.

851745547158 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (851745547157) 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, 14277591 + ... + 14337122.

It is an arithmetic number, because the mean of its divisors is an integer number (39960448101).

Almost surely, 2^851745547158 is an apocalyptic number.

851745547158 is an abundant number, since it is smaller than the sum of its proper divisors (1066355961690).

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

851745547158 is a wasteful number, since it uses less digits than its factorization.

851745547158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28614781 (or 28614770 counting only the distinct ones).

The product of its digits is 31360000, while the sum is 60.

The spelling of 851745547158 in words is "eight hundred fifty-one billion, seven hundred forty-five million, five hundred forty-seven thousand, one hundred fifty-eight".