820757888484380 has 96 divisors (see below), whose sum is σ = 2194614516713472. Its totient is φ = 250377648192000.

The previous prime is 820757888484377. The next prime is 820757888484403. The reversal of 820757888484380 is 83484888757028.

820757888484380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 820757888484295 and 820757888484304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5669711321 + ... + 5669856080.

It is an arithmetic number, because the mean of its divisors is an integer number (22860567882432).

Almost surely, 2^{820757888484380} is an apocalyptic number.

It is an amenable number.

820757888484380 is an abundant number, since it is smaller than the sum of its proper divisors (1373856628229092).

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

820757888484380 is a wasteful number, since it uses less digits than its factorization.

820757888484380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11339567475 (or 11339567473 counting only the distinct ones).

The product of its (nonzero) digits is 6165626880, while the sum is 80.

The spelling of 820757888484380 in words is "eight hundred twenty trillion, seven hundred fifty-seven billion, eight hundred eighty-eight million, four hundred eighty-four thousand, three hundred eighty".