20675594219 has 4 divisors (see below), whose sum is σ = 23629250544. Its totient is φ = 17721937896.

The previous prime is 20675594213. The next prime is 20675594221. The reversal of 20675594219 is 91249557602.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20675594219 is a prime.

It is a super-2 number, since 2×20675594219² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20675594213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1476828152 + ... + 1476828165.

It is an arithmetic number, because the mean of its divisors is an integer number (5907312636).

Almost surely, 2^20675594219 is an apocalyptic number.

20675594219 is a deficient number, since it is larger than the sum of its proper divisors (2953656325).

20675594219 is an equidigital number, since it uses as much as digits as its factorization.

20675594219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2953656324.

The product of its (nonzero) digits is 1360800, while the sum is 50.

The spelling of 20675594219 in words is "twenty billion, six hundred seventy-five million, five hundred ninety-four thousand, two hundred nineteen".