820067877546 has 16 divisors (see below), whose sum is σ = 1696692160800. Its totient is φ = 263929891568.

The previous prime is 820067877529. The next prime is 820067877557. The reversal of 820067877546 is 645778760028.

It is a happy number.

It is a super-2 number, since 2×820067877546² (a number of 25 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 820067877546.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2356516716 + ... + 2356517063.

It is an arithmetic number, because the mean of its divisors is an integer number (106043260050).

Almost surely, 2^820067877546 is an apocalyptic number.

820067877546 is an abundant number, since it is smaller than the sum of its proper divisors (876624283254).

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

820067877546 is a wasteful number, since it uses less digits than its factorization.

820067877546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4713033813.

The product of its (nonzero) digits is 31610880, while the sum is 60.

The spelling of 820067877546 in words is "eight hundred twenty billion, sixty-seven million, eight hundred seventy-seven thousand, five hundred forty-six".