82175911098649 has 3 divisors (see below), whose sum is σ = 82175920163743. Its totient is φ = 82175902033556.

The previous prime is 82175911098623. The next prime is 82175911098653. The reversal of 82175911098649 is 94689011957128.

The square root of 82175911098649 is 9065093.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 21555173990025 + 60620737108624 = 4642755^2 + 7785932^2 .

It is not a de Polignac number, because 82175911098649 - 2¹⁹ = 82175910574361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82175911099649) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 4532547 + ... + 13597639.

Almost surely, 2^{82175911098649} is an apocalyptic number.

82175911098649 is the 9065093-rd square number.

82175911098649 is the 4532547-th centered octagonal number.

It is an amenable number.

82175911098649 is a deficient number, since it is larger than the sum of its proper divisors (9065094).

82175911098649 is an frugal number, since it uses more digits than its factorization.

82175911098649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18130186 (or 9065093 counting only the distinct ones).

The product of its (nonzero) digits is 78382080, while the sum is 70.

The spelling of 82175911098649 in words is "eighty-two trillion, one hundred seventy-five billion, nine hundred eleven million, ninety-eight thousand, six hundred forty-nine".