851702464636 has 6 divisors (see below), whose sum is σ = 1490479313120. Its totient is φ = 425851232316.

The previous prime is 851702464621. The next prime is 851702464637. The reversal of 851702464636 is 636464207158.

It is a super-2 number, since 2×851702464636² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (851702464637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106462808076 + ... + 106462808083.

Almost surely, 2^851702464636 is an apocalyptic number.

It is an amenable number.

851702464636 is a deficient number, since it is larger than the sum of its proper divisors (638776848484).

851702464636 is a wasteful number, since it uses less digits than its factorization.

851702464636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212925616163 (or 212925616161 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 52.

The spelling of 851702464636 in words is "eight hundred fifty-one billion, seven hundred two million, four hundred sixty-four thousand, six hundred thirty-six".