85121286882441 has 4 divisors (see below), whose sum is σ = 113495049176592. Its totient is φ = 56747524588292.

The previous prime is 85121286882433. The next prime is 85121286882491. The reversal of 85121286882441 is 14428868212158.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 85121286882441 - 2³ = 85121286882433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85121286882491) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 14186881147071 + ... + 14186881147076.

It is an arithmetic number, because the mean of its divisors is an integer number (28373762294148).

Almost surely, 2^{85121286882441} is an apocalyptic number.

It is an amenable number.

85121286882441 is a deficient number, since it is larger than the sum of its proper divisors (28373762294151).

85121286882441 is a wasteful number, since it uses less digits than its factorization.

85121286882441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28373762294150.

The product of its digits is 15728640, while the sum is 60.

The spelling of 85121286882441 in words is "eighty-five trillion, one hundred twenty-one billion, two hundred eighty-six million, eight hundred eighty-two thousand, four hundred forty-one".