20475730167 has 4 divisors (see below), whose sum is σ = 27300973560. Its totient is φ = 13650486776.

The previous prime is 20475730159. The next prime is 20475730193. The reversal of 20475730167 is 76103757402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20475730167 - 2³ = 20475730159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20475730117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3412621692 + ... + 3412621697.

It is an arithmetic number, because the mean of its divisors is an integer number (6825243390).

Almost surely, 2^20475730167 is an apocalyptic number.

20475730167 is a deficient number, since it is larger than the sum of its proper divisors (6825243393).

20475730167 is an equidigital number, since it uses as much as digits as its factorization.

20475730167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6825243392.

The product of its (nonzero) digits is 246960, while the sum is 42.

The spelling of 20475730167 in words is "twenty billion, four hundred seventy-five million, seven hundred thirty thousand, one hundred sixty-seven".