5471721909197 has 4 divisors (see below), whose sum is σ = 5472219938016. Its totient is φ = 5471223880380.

The previous prime is 5471721909163. The next prime is 5471721909209. The reversal of 5471721909197 is 7919091271745.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5471721909197 - 2¹⁰ = 5471721908173 is a prime.

It is a super-3 number, since 3×5471721909197³ (a number of 39 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5471721999197) 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, 248997929 + ... + 249019902.

It is an arithmetic number, because the mean of its divisors is an integer number (1368054984504).

Almost surely, 2^{5471721909197} is an apocalyptic number.

It is an amenable number.

5471721909197 is a deficient number, since it is larger than the sum of its proper divisors (498028819).

5471721909197 is a wasteful number, since it uses less digits than its factorization.

5471721909197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498028818.

The product of its (nonzero) digits is 10001880, while the sum is 62.

The spelling of 5471721909197 in words is "five trillion, four hundred seventy-one billion, seven hundred twenty-one million, nine hundred nine thousand, one hundred ninety-seven".