85993688063421 has 6 divisors (see below), whose sum is σ = 124213104980510. Its totient is φ = 57329125375608.

The previous prime is 85993688063363. The next prime is 85993688063429. The reversal of 85993688063421 is 12436088639958.

It is a happy number.

85993688063421 is a `hidden beast` number, since 8 + 5 + 9 + 9 + 3 + 68 + 80 + 63 + 421 = 666.

It can be written as a sum of positive squares in only one way, i.e., 85299447492900 + 694240570521 = 9235770^2 + 833211^2 .

It is not a de Polignac number, because 85993688063421 - 2¹⁰ = 85993688062397 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85993688063421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85993688063429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4777427114626 + ... + 4777427114643.

Almost surely, 2^{85993688063421} is an apocalyptic number.

It is an amenable number.

85993688063421 is a deficient number, since it is larger than the sum of its proper divisors (38219416917089).

85993688063421 is a wasteful number, since it uses less digits than its factorization.

85993688063421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9554854229275 (or 9554854229272 counting only the distinct ones).

The product of its (nonzero) digits is 537477120, while the sum is 72.

The spelling of 85993688063421 in words is "eighty-five trillion, nine hundred ninety-three billion, six hundred eighty-eight million, sixty-three thousand, four hundred twenty-one".