851375577854 has 4 divisors (see below), whose sum is σ = 1277063366784. Its totient is φ = 425687788926.

The previous prime is 851375577851. The next prime is 851375577869. The reversal of 851375577854 is 458775573158.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (851375577851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212843894462 + ... + 212843894465.

It is an arithmetic number, because the mean of its divisors is an integer number (319265841696).

Almost surely, 2^851375577854 is an apocalyptic number.

851375577854 is a deficient number, since it is larger than the sum of its proper divisors (425687788930).

851375577854 is a wasteful number, since it uses less digits than its factorization.

851375577854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425687788929.

The product of its digits is 164640000, while the sum is 65.

The spelling of 851375577854 in words is "eight hundred fifty-one billion, three hundred seventy-five million, five hundred seventy-seven thousand, eight hundred fifty-four".