82501608538 has 8 divisors (see below), whose sum is σ = 123755138388. Its totient is φ = 41249895744.

The previous prime is 82501608521. The next prime is 82501608569. The reversal of 82501608538 is 83580610528.

It can be written as a sum of positive squares in 2 ways, for example, as 82499349529 + 2259009 = 287227^2 + 1503^2 .

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

It is a super-2 number, since 2×82501608538² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

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, 334431 + ... + 526162.

Almost surely, 2^82501608538 is an apocalyptic number.

82501608538 is a deficient number, since it is larger than the sum of its proper divisors (41253529850).

82501608538 is a wasteful number, since it uses less digits than its factorization.

82501608538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 908528.

The product of its (nonzero) digits is 460800, while the sum is 46.

The spelling of 82501608538 in words is "eighty-two billion, five hundred one million, six hundred eight thousand, five hundred thirty-eight".