820356537732 has 48 divisors (see below), whose sum is σ = 1936594134720. Its totient is φ = 270250979328.

The previous prime is 820356537727. The next prime is 820356537779. The reversal of 820356537732 is 237735653028.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2074923 + ... + 2438445.

It is an arithmetic number, because the mean of its divisors is an integer number (40345711140).

Almost surely, 2^820356537732 is an apocalyptic number.

It is an amenable number.

820356537732 is an abundant number, since it is smaller than the sum of its proper divisors (1116237596988).

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

820356537732 is a wasteful number, since it uses less digits than its factorization.

820356537732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365732 (or 365730 counting only the distinct ones).

The product of its (nonzero) digits is 6350400, while the sum is 51.

The spelling of 820356537732 in words is "eight hundred twenty billion, three hundred fifty-six million, five hundred thirty-seven thousand, seven hundred thirty-two".