272381697605 has 4 divisors (see below), whose sum is σ = 326858037132. Its totient is φ = 217905358080.

The previous prime is 272381697593. The next prime is 272381697659. The reversal of 272381697605 is 506796183272.

It is a Cunningham number, because it is equal to 521902²+1.

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 98057912164 + 174323785441 = 313142^2 + 417521^2 .

It is not a de Polignac number, because 272381697605 - 2¹⁶ = 272381632069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27238169756 + ... + 27238169765.

It is an arithmetic number, because the mean of its divisors is an integer number (81714509283).

Almost surely, 2^272381697605 is an apocalyptic number.

It is an amenable number.

272381697605 is a deficient number, since it is larger than the sum of its proper divisors (54476339527).

272381697605 is an equidigital number, since it uses as much as digits as its factorization.

272381697605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54476339526.

The product of its (nonzero) digits is 7620480, while the sum is 56.

The spelling of 272381697605 in words is "two hundred seventy-two billion, three hundred eighty-one million, six hundred ninety-seven thousand, six hundred five".