220705238349 has 20 divisors (see below), whose sum is σ = 329709375996. Its totient is φ = 147130623936.

The previous prime is 220705238339. The next prime is 220705238407. The reversal of 220705238349 is 943832507022.

220705238349 is a `hidden beast` number, since 2 + 2 + 0 + 7 + 0 + 523 + 83 + 49 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 207020450025 + 13684788324 = 454995^2 + 116982^2 .

It is not a de Polignac number, because 220705238349 - 2⁸ = 220705238093 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220705238329) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2672257 + ... + 2753609.

Almost surely, 2^220705238349 is an apocalyptic number.

It is an amenable number.

220705238349 is a deficient number, since it is larger than the sum of its proper divisors (109004137647).

220705238349 is an equidigital number, since it uses as much as digits as its factorization.

220705238349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114858 (or 114849 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 220705238349 in words is "two hundred twenty billion, seven hundred five million, two hundred thirty-eight thousand, three hundred forty-nine".