163658785213 has 16 divisors (see below), whose sum is σ = 204620178816. Its totient is φ = 127165040640.

The previous prime is 163658785193. The next prime is 163658785217. The reversal of 163658785213 is 312587856361.

It is not a de Polignac number, because 163658785213 - 2¹³ = 163658777021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163658785217) 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, 2983356 + ... + 3037717.

It is an arithmetic number, because the mean of its divisors is an integer number (12788761176).

Almost surely, 2^163658785213 is an apocalyptic number.

It is an amenable number.

163658785213 is a deficient number, since it is larger than the sum of its proper divisors (40961393603).

163658785213 is a wasteful number, since it uses less digits than its factorization.

163658785213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6021444.

The product of its digits is 7257600, while the sum is 55.

The spelling of 163658785213 in words is "one hundred sixty-three billion, six hundred fifty-eight million, seven hundred eighty-five thousand, two hundred thirteen".