381273324481 has 4 divisors (see below), whose sum is σ = 435740942272. Its totient is φ = 326805706692.

The previous prime is 381273324437. The next prime is 381273324499. The reversal of 381273324481 is 184423372183.

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, and also an emirpimes, since its reverse is a distinct semiprime: 184423372183 = 29 ⋅6359426627.

It is a cyclic number.

It is not a de Polignac number, because 381273324481 - 2¹¹ = 381273322433 is a prime.

It is a super-2 number, since 2×381273324481² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (381273324431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27233808885 + ... + 27233808898.

It is an arithmetic number, because the mean of its divisors is an integer number (108935235568).

Almost surely, 2^381273324481 is an apocalyptic number.

It is an amenable number.

381273324481 is a deficient number, since it is larger than the sum of its proper divisors (54467617791).

381273324481 is an equidigital number, since it uses as much as digits as its factorization.

381273324481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54467617790.

The product of its digits is 774144, while the sum is 46.

The spelling of 381273324481 in words is "three hundred eighty-one billion, two hundred seventy-three million, three hundred twenty-four thousand, four hundred eighty-one".