83447804790529 has 9 divisors (see below), whose sum is σ = 83503208640033. Its totient is φ = 83392437694932.

The previous prime is 83447804790517. The next prime is 83447804790541. The reversal of 83447804790529 is 92509740874438.

The square root of 83447804790529 is 9134977.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (83447804790517) and next prime (83447804790541).

It is not a de Polignac number, because 83447804790529 - 2³³ = 83439214855937 is a prime.

It is a super-2 number, since 2×83447804790529² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83447804790569) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 25605338902 + ... + 25605342160.

It is an arithmetic number, because the mean of its divisors is an integer number (9278134293337).

Almost surely, 2^{83447804790529} is an apocalyptic number.

83447804790529 is the 9134977-th square number.

83447804790529 is the 4567489-th centered octagonal number.

It is an amenable number.

83447804790529 is a deficient number, since it is larger than the sum of its proper divisors (55403849504).

83447804790529 is an frugal number, since it uses more digits than its factorization.

83447804790529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12124 (or 6062 counting only the distinct ones).

The product of its (nonzero) digits is 487710720, while the sum is 70.

The spelling of 83447804790529 in words is "eighty-three trillion, four hundred forty-seven billion, eight hundred four million, seven hundred ninety thousand, five hundred twenty-nine".