85646436514 has 4 divisors (see below), whose sum is σ = 128469654774. Its totient is φ = 42823218256.

The previous prime is 85646436433. The next prime is 85646436539. The reversal of 85646436514 is 41563464658.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 81781700625 + 3864735889 = 285975^2 + 62167^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21411609127 + ... + 21411609130.

Almost surely, 2^85646436514 is an apocalyptic number.

85646436514 is a deficient number, since it is larger than the sum of its proper divisors (42823218260).

85646436514 is a wasteful number, since it uses less digits than its factorization.

85646436514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42823218259.

The product of its digits is 8294400, while the sum is 52.

The spelling of 85646436514 in words is "eighty-five billion, six hundred forty-six million, four hundred thirty-six thousand, five hundred fourteen".