272197906813 has 4 divisors (see below), whose sum is σ = 311083322080. Its totient is φ = 233312491548.

The previous prime is 272197906789. The next prime is 272197906819. The reversal of 272197906813 is 318609791272.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-272197906813 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 (272197906819) 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, 19442707623 + ... + 19442707636.

It is an arithmetic number, because the mean of its divisors is an integer number (77770830520).

Almost surely, 2^272197906813 is an apocalyptic number.

It is an amenable number.

272197906813 is a deficient number, since it is larger than the sum of its proper divisors (38885415267).

272197906813 is an equidigital number, since it uses as much as digits as its factorization.

272197906813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38885415266.

The product of its (nonzero) digits is 2286144, while the sum is 55.

The spelling of 272197906813 in words is "two hundred seventy-two billion, one hundred ninety-seven million, nine hundred six thousand, eight hundred thirteen".