20147673307 has 4 divisors (see below), whose sum is σ = 20692205056. Its totient is φ = 19603141560.

The previous prime is 20147673277. The next prime is 20147673311. The reversal of 20147673307 is 70337674102.

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 20147673307 - 2¹¹ = 20147671259 is a prime.

It is the 141943-rd Hogben number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20147673307.

It is not an unprimeable number, because it can be changed into a prime (20147673317) by changing a digit.

It is a nontrivial repunit in base 141942.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 272265819 + ... + 272265892.

It is an arithmetic number, because the mean of its divisors is an integer number (5173051264).

Almost surely, 2^20147673307 is an apocalyptic number.

20147673307 is a deficient number, since it is larger than the sum of its proper divisors (544531749).

20147673307 is an equidigital number, since it uses as much as digits as its factorization.

20147673307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544531748.

The product of its (nonzero) digits is 148176, while the sum is 40.

The spelling of 20147673307 in words is "twenty billion, one hundred forty-seven million, six hundred seventy-three thousand, three hundred seven".