820381733532 has 36 divisors (see below), whose sum is σ = 2088879536016. Its totient is φ = 271464513600.

The previous prime is 820381733461. The next prime is 820381733573. The reversal of 820381733532 is 235337183028.

820381733532 is a `hidden beast` number, since 8 + 2 + 0 + 3 + 81 + 7 + 33 + 532 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83164344 + ... + 83174207.

It is an arithmetic number, because the mean of its divisors is an integer number (58024431556).

Almost surely, 2^820381733532 is an apocalyptic number.

It is an amenable number.

820381733532 is an abundant number, since it is smaller than the sum of its proper divisors (1268497802484).

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

820381733532 is a wasteful number, since it uses less digits than its factorization.

820381733532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166338698 (or 166338693 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 820381733532 in words is "eight hundred twenty billion, three hundred eighty-one million, seven hundred thirty-three thousand, five hundred thirty-two".