82530698781 has 8 divisors (see below), whose sum is σ = 110042274784. Its totient is φ = 55019794320.

The previous prime is 82530698749. The next prime is 82530698801. The reversal of 82530698781 is 18789603528.

It is a happy number.

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

It is not a de Polignac number, because 82530698781 - 2⁵ = 82530698749 is a prime.

It is a super-2 number, since 2×82530698781² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82530698581) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 328791 + ... + 522651.

It is an arithmetic number, because the mean of its divisors is an integer number (13755284348).

Almost surely, 2^82530698781 is an apocalyptic number.

It is an amenable number.

82530698781 is a deficient number, since it is larger than the sum of its proper divisors (27511576003).

82530698781 is a wasteful number, since it uses less digits than its factorization.

82530698781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335771.

The product of its (nonzero) digits is 5806080, while the sum is 57.

The spelling of 82530698781 in words is "eighty-two billion, five hundred thirty million, six hundred ninety-eight thousand, seven hundred eighty-one".