851459164951 has 4 divisors (see below), whose sum is σ = 851623259400. Its totient is φ = 851295070504.

The previous prime is 851459164943. The next prime is 851459164981. The reversal of 851459164951 is 159461954158.

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

It is a cyclic number.

It is not a de Polignac number, because 851459164951 - 2³ = 851459164943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (851459164981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82039441 + ... + 82049818.

It is an arithmetic number, because the mean of its divisors is an integer number (212905814850).

Almost surely, 2^851459164951 is an apocalyptic number.

851459164951 is a deficient number, since it is larger than the sum of its proper divisors (164094449).

851459164951 is a wasteful number, since it uses less digits than its factorization.

851459164951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164094448.

The product of its digits is 7776000, while the sum is 58.

The spelling of 851459164951 in words is "eight hundred fifty-one billion, four hundred fifty-nine million, one hundred sixty-four thousand, nine hundred fifty-one".