820246619791873 has 8 divisors (see below), whose sum is σ = 849595970393856. Its totient is φ = 791077880578800.

The previous prime is 820246619791843. The next prime is 820246619791903. The reversal of 820246619791873 is 378197916642028.

It is an interprime number because it is at equal distance from previous prime (820246619791843) and next prime (820246619791903).

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 820246619791873 - 2³⁷ = 820109180838401 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 820246619791796 and 820246619791805.

It is not an unprimeable number, because it can be changed into a prime (820246619791843) 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, 45152837983 + ... + 45152856148.

It is an arithmetic number, because the mean of its divisors is an integer number (106199496299232).

Almost surely, 2^{820246619791873} is an apocalyptic number.

It is an amenable number.

820246619791873 is a deficient number, since it is larger than the sum of its proper divisors (29349350601983).

820246619791873 is a wasteful number, since it uses less digits than its factorization.

820246619791873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90305694455.

The product of its (nonzero) digits is 438939648, while the sum is 73.

The spelling of 820246619791873 in words is "eight hundred twenty trillion, two hundred forty-six billion, six hundred nineteen million, seven hundred ninety-one thousand, eight hundred seventy-three".