83271547409 has 4 divisors (see below), whose sum is σ = 83307613620. Its totient is φ = 83235481200.

The previous prime is 83271547379. The next prime is 83271547441. The reversal of 83271547409 is 90474517238.

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 40051216384 + 43220331025 = 200128^2 + 207895^2 .

It is a cyclic number.

It is not a de Polignac number, because 83271547409 - 2³² = 78976580113 is a prime.

It is a super-2 number, since 2×83271547409² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83271544409) 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, 18029642 + ... + 18034259.

It is an arithmetic number, because the mean of its divisors is an integer number (20826903405).

Almost surely, 2^83271547409 is an apocalyptic number.

It is an amenable number.

83271547409 is a deficient number, since it is larger than the sum of its proper divisors (36066211).

83271547409 is a wasteful number, since it uses less digits than its factorization.

83271547409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36066210.

The product of its (nonzero) digits is 1693440, while the sum is 50.

The spelling of 83271547409 in words is "eighty-three billion, two hundred seventy-one million, five hundred forty-seven thousand, four hundred nine".