80530631999 has 4 divisors (see below), whose sum is σ = 80817218160. Its totient is φ = 80244045840.

The previous prime is 80530631981. The next prime is 80530632001. The reversal of 80530631999 is 99913603508.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 80530631999 - 2⁸ = 80530631743 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80530631999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80530631939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143292659 + ... + 143293220.

It is an arithmetic number, because the mean of its divisors is an integer number (20204304540).

Almost surely, 2^80530631999 is an apocalyptic number.

80530631999 is a deficient number, since it is larger than the sum of its proper divisors (286586161).

80530631999 is a wasteful number, since it uses less digits than its factorization.

80530631999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286586160.

The product of its (nonzero) digits is 1574640, while the sum is 53.

The spelling of 80530631999 in words is "eighty billion, five hundred thirty million, six hundred thirty-one thousand, nine hundred ninety-nine".