820082621499 has 8 divisors (see below), whose sum is σ = 1093609673232. Its totient is φ = 546638658720.

The previous prime is 820082621489. The next prime is 820082621563. The reversal of 820082621499 is 994126280028.

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

It is not a de Polignac number, because 820082621499 - 2¹⁷ = 820082490427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (820082621429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20749204 + ... + 20788689.

It is an arithmetic number, because the mean of its divisors is an integer number (136701209154).

Almost surely, 2^820082621499 is an apocalyptic number.

820082621499 is a deficient number, since it is larger than the sum of its proper divisors (273527051733).

820082621499 is a wasteful number, since it uses less digits than its factorization.

820082621499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41544477.

The product of its (nonzero) digits is 995328, while the sum is 51.

The spelling of 820082621499 in words is "eight hundred twenty billion, eighty-two million, six hundred twenty-one thousand, four hundred ninety-nine".