32194785217 has 12 divisors (see below), whose sum is σ = 37459169940. Its totient is φ = 27589566816.

The previous prime is 32194785193. The next prime is 32194785221. The reversal of 32194785217 is 71258749123.

It can be written as a sum of positive squares in 2 ways, for example, as 10866811536 + 21327973681 = 104244^2 + 146041^2 .

It is not a de Polignac number, because 32194785217 - 2⁷ = 32194785089 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (32194785517) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 166063 + ... + 303259.

It is an arithmetic number, because the mean of its divisors is an integer number (3121597495).

Almost surely, 2^32194785217 is an apocalyptic number.

It is an amenable number.

32194785217 is a deficient number, since it is larger than the sum of its proper divisors (5264384723).

32194785217 is a wasteful number, since it uses less digits than its factorization.

32194785217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142000 (or 141993 counting only the distinct ones).

The product of its digits is 846720, while the sum is 49.

The spelling of 32194785217 in words is "thirty-two billion, one hundred ninety-four million, seven hundred eighty-five thousand, two hundred seventeen".