820020734337 has 16 divisors (see below), whose sum is σ = 1249604444160. Its totient is φ = 468564886992.

The previous prime is 820020734333. The next prime is 820020734339. The reversal of 820020734337 is 733437020028.

It is not a de Polignac number, because 820020734337 - 2² = 820020734333 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 820020734295 and 820020734304.

It is not an unprimeable number, because it can be changed into a prime (820020734333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 208983 + ... + 1297580.

It is an arithmetic number, because the mean of its divisors is an integer number (78100277760).

Almost surely, 2^820020734337 is an apocalyptic number.

It is an amenable number.

820020734337 is a deficient number, since it is larger than the sum of its proper divisors (429583709823).

820020734337 is a wasteful number, since it uses less digits than its factorization.

820020734337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1532492.

The product of its (nonzero) digits is 169344, while the sum is 39.

The spelling of 820020734337 in words is "eight hundred twenty billion, twenty million, seven hundred thirty-four thousand, three hundred thirty-seven".