820090164755 has 8 divisors (see below), whose sum is σ = 1002676277232. Its totient is φ = 643693412128.

The previous prime is 820090164709. The next prime is 820090164763. The reversal of 820090164755 is 557461090028.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 820090164755 - 2¹⁰ = 820090163731 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1547339669 + ... + 1547340198.

It is an arithmetic number, because the mean of its divisors is an integer number (125334534654).

Almost surely, 2^820090164755 is an apocalyptic number.

820090164755 is a deficient number, since it is larger than the sum of its proper divisors (182586112477).

820090164755 is a wasteful number, since it uses less digits than its factorization.

820090164755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3094679925.

The product of its (nonzero) digits is 604800, while the sum is 47.

The spelling of 820090164755 in words is "eight hundred twenty billion, ninety million, one hundred sixty-four thousand, seven hundred fifty-five".