82505530490 has 8 divisors (see below), whose sum is σ = 148509954900. Its totient is φ = 33002212192.

The previous prime is 82505530477. The next prime is 82505530529. The reversal of 82505530490 is 9403550528.

It can be written as a sum of positive squares in 2 ways, for example, as 73500089881 + 9005440609 = 271109^2 + 94897^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×82505530490² (a number of 23 digits) contains 22 as substring.

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, 4125276515 + ... + 4125276534.

Almost surely, 2^82505530490 is an apocalyptic number.

82505530490 is a deficient number, since it is larger than the sum of its proper divisors (66004424410).

82505530490 is a wasteful number, since it uses less digits than its factorization.

82505530490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8250553056.

The product of its (nonzero) digits is 216000, while the sum is 41.

The spelling of 82505530490 in words is "eighty-two billion, five hundred five million, five hundred thirty thousand, four hundred ninety".