20673354195 has 80 divisors (see below), whose sum is σ = 39960375840. Its totient is φ = 10164704256.

The previous prime is 20673354193. The next prime is 20673354223. The reversal of 20673354195 is 59145337602.

20673354195 is a `hidden beast` number, since 206 + 7 + 3 + 354 + 1 + 95 = 666.

It is not a de Polignac number, because 20673354195 - 2¹ = 20673354193 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 20673354195.

It is not an unprimeable number, because it can be changed into a prime (20673354193) by changing a digit.

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 79 ways as a sum of consecutive naturals, for example, 5141896 + ... + 5145914.

It is an arithmetic number, because the mean of its divisors is an integer number (499504698).

Almost surely, 2^20673354195 is an apocalyptic number.

20673354195 is a deficient number, since it is larger than the sum of its proper divisors (19287021645).

20673354195 is a wasteful number, since it uses less digits than its factorization.

20673354195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5026 (or 5017 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 45.

The spelling of 20673354195 in words is "twenty billion, six hundred seventy-three million, three hundred fifty-four thousand, one hundred ninety-five".