85918553421 has 8 divisors (see below), whose sum is σ = 114565823904. Its totient is φ = 57275159280.

The previous prime is 85918553419. The next prime is 85918553429. The reversal of 85918553421 is 12435581958.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 85918553421 - 2¹ = 85918553419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85918553429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 916966 + ... + 1006311.

It is an arithmetic number, because the mean of its divisors is an integer number (14320727988).

Almost surely, 2^85918553421 is an apocalyptic number.

It is an amenable number.

85918553421 is a deficient number, since it is larger than the sum of its proper divisors (28647270483).

85918553421 is a wasteful number, since it uses less digits than its factorization.

85918553421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1938171.

The product of its digits is 1728000, while the sum is 51.

The spelling of 85918553421 in words is "eighty-five billion, nine hundred eighteen million, five hundred fifty-three thousand, four hundred twenty-one".