85801436516 has 6 divisors (see below), whose sum is σ = 150152513910. Its totient is φ = 42900718256.

The previous prime is 85801436509. The next prime is 85801436533. The reversal of 85801436516 is 61563410858.

It can be written as a sum of positive squares in only one way, i.e., 75740544100 + 10060892416 = 275210^2 + 100304^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10725179561 + ... + 10725179568.

It is an arithmetic number, because the mean of its divisors is an integer number (25025418985).

Almost surely, 2^85801436516 is an apocalyptic number.

It is an amenable number.

85801436516 is a deficient number, since it is larger than the sum of its proper divisors (64351077394).

85801436516 is a wasteful number, since it uses less digits than its factorization.

85801436516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21450359133 (or 21450359131 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 47.

The spelling of 85801436516 in words is "eighty-five billion, eight hundred one million, four hundred thirty-six thousand, five hundred sixteen".