64203119173 has 4 divisors (see below), whose sum is σ = 67979773260. Its totient is φ = 60426465088.

The previous prime is 64203119143. The next prime is 64203119177. The reversal of 64203119173 is 37191130246.

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

It can be written as a sum of positive squares in 2 ways, for example, as 29270761569 + 34932357604 = 171087^2 + 186902^2 .

It is a cyclic number.

It is not a de Polignac number, because 64203119173 - 2¹³ = 64203110981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64203119177) 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, 1888327018 + ... + 1888327051.

It is an arithmetic number, because the mean of its divisors is an integer number (16994943315).

Almost surely, 2^64203119173 is an apocalyptic number.

It is an amenable number.

64203119173 is a deficient number, since it is larger than the sum of its proper divisors (3776654087).

64203119173 is a wasteful number, since it uses less digits than its factorization.

64203119173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3776654086.

The product of its (nonzero) digits is 27216, while the sum is 37.

The spelling of 64203119173 in words is "sixty-four billion, two hundred three million, one hundred nineteen thousand, one hundred seventy-three".