820771025673 has 8 divisors (see below), whose sum is σ = 1158735565728. Its totient is φ = 514993584704.

The previous prime is 820771025629. The next prime is 820771025681. The reversal of 820771025673 is 376520177028.

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 820771025673 - 2¹³ = 820771017481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (820771025603) 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, 8046774711 + ... + 8046774812.

It is an arithmetic number, because the mean of its divisors is an integer number (144841945716).

Almost surely, 2^820771025673 is an apocalyptic number.

It is an amenable number.

820771025673 is a deficient number, since it is larger than the sum of its proper divisors (337964540055).

820771025673 is a wasteful number, since it uses less digits than its factorization.

820771025673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16093549543.

The product of its (nonzero) digits is 987840, while the sum is 48.

The spelling of 820771025673 in words is "eight hundred twenty billion, seven hundred seventy-one million, twenty-five thousand, six hundred seventy-three".