86435990205 has 16 divisors (see below), whose sum is σ = 138304200384. Its totient is φ = 46096989440.

The previous prime is 86435990159. The next prime is 86435990209. The reversal of 86435990205 is 50209953468.

It is not a de Polignac number, because 86435990205 - 2¹¹ = 86435988157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86435990209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 215365 + ... + 468245.

It is an arithmetic number, because the mean of its divisors is an integer number (8644012524).

Almost surely, 2^86435990205 is an apocalyptic number.

It is an amenable number.

86435990205 is a deficient number, since it is larger than the sum of its proper divisors (51868210179).

86435990205 is a wasteful number, since it uses less digits than its factorization.

86435990205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275676.

The product of its (nonzero) digits is 2332800, while the sum is 51.

The spelling of 86435990205 in words is "eighty-six billion, four hundred thirty-five million, nine hundred ninety thousand, two hundred five".