820419543468 has 72 divisors (see below), whose sum is σ = 2494843070720. Its totient is φ = 222068446560.

The previous prime is 820419543467. The next prime is 820419543473. The reversal of 820419543468 is 864345914028.

820419543468 is a `hidden beast` number, since 8 + 20 + 4 + 19 + 543 + 4 + 68 = 666.

It is not an unprimeable number, because it can be changed into a prime (820419543467) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 85669768 + ... + 85679343.

Almost surely, 2^820419543468 is an apocalyptic number.

It is an amenable number.

820419543468 is an abundant number, since it is smaller than the sum of its proper divisors (1674423527252).

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

820419543468 is a wasteful number, since it uses less digits than its factorization.

820419543468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171349147 (or 171349142 counting only the distinct ones).

The product of its (nonzero) digits is 6635520, while the sum is 54.

The spelling of 820419543468 in words is "eight hundred twenty billion, four hundred nineteen million, five hundred forty-three thousand, four hundred sixty-eight".