820246619791904 has 48 divisors (see below), whose sum is σ = 1669393443029760. Its totient is φ = 396312422119680.

The previous prime is 820246619791903. The next prime is 820246619791981. The reversal of 820246619791904 is 409197916642028.

It is not an unprimeable number, because it can be changed into a prime (820246619791903) 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, 604638359 + ... + 605993430.

It is an arithmetic number, because the mean of its divisors is an integer number (34779030063120).

Almost surely, 2^{820246619791904} is an apocalyptic number.

It is an amenable number.

820246619791904 is an abundant number, since it is smaller than the sum of its proper divisors (849146823237856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

820246619791904 is a wasteful number, since it uses less digits than its factorization.

820246619791904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1210632513 (or 1210632505 counting only the distinct ones).

The product of its (nonzero) digits is 94058496, while the sum is 68.

The spelling of 820246619791904 in words is "eight hundred twenty trillion, two hundred forty-six billion, six hundred nineteen million, seven hundred ninety-one thousand, nine hundred four".