85040418541 has 4 divisors (see below), whose sum is σ = 91581989212. Its totient is φ = 78498847872.

The previous prime is 85040418527. The next prime is 85040418553. The reversal of 85040418541 is 14581404058.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3812568516 + 81227850025 = 61746^2 + 285005^2 .

It is a cyclic number.

It is not a de Polignac number, because 85040418541 - 2⁷ = 85040418413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85040418494 and 85040418503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85040418511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3270785316 + ... + 3270785341.

It is an arithmetic number, because the mean of its divisors is an integer number (22895497303).

Almost surely, 2^85040418541 is an apocalyptic number.

It is an amenable number.

85040418541 is a deficient number, since it is larger than the sum of its proper divisors (6541570671).

85040418541 is a wasteful number, since it uses less digits than its factorization.

85040418541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6541570670.

The product of its (nonzero) digits is 102400, while the sum is 40.

The spelling of 85040418541 in words is "eighty-five billion, forty million, four hundred eighteen thousand, five hundred forty-one".