85251684463 has 4 divisors (see below), whose sum is σ = 93001837608. Its totient is φ = 77501531320.

The previous prime is 85251684461. The next prime is 85251684527. The reversal of 85251684463 is 36448615258.

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 85251684463 - 2¹ = 85251684461 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85251684463.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85251684461) 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, 3875076556 + ... + 3875076577.

It is an arithmetic number, because the mean of its divisors is an integer number (23250459402).

Almost surely, 2^85251684463 is an apocalyptic number.

85251684463 is a deficient number, since it is larger than the sum of its proper divisors (7750153145).

85251684463 is a wasteful number, since it uses less digits than its factorization.

85251684463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7750153144.

The product of its digits is 5529600, while the sum is 52.

The spelling of 85251684463 in words is "eighty-five billion, two hundred fifty-one million, six hundred eighty-four thousand, four hundred sixty-three".