820038013884 has 48 divisors (see below), whose sum is σ = 2127323671200. Its totient is φ = 273178965888.

The previous prime is 820038013853. The next prime is 820038013973. The reversal of 820038013884 is 488310830028.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2142369 + ... + 2495960.

It is an arithmetic number, because the mean of its divisors is an integer number (44319243150).

Almost surely, 2^820038013884 is an apocalyptic number.

It is an amenable number.

820038013884 is an abundant number, since it is smaller than the sum of its proper divisors (1307285657316).

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

820038013884 is a wasteful number, since it uses less digits than its factorization.

820038013884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4639979 (or 4639971 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 45.

The spelling of 820038013884 in words is "eight hundred twenty billion, thirty-eight million, thirteen thousand, eight hundred eighty-four".