820534735720938 has 16 divisors (see below), whose sum is σ = 1875507967362240. Its totient is φ = 234438495920256.

The previous prime is 820534735720913. The next prime is 820534735720979. The reversal of 820534735720938 is 839027537435028.

820534735720938 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×820534735720938² (a number of 31 digits) contains 22 as substring.

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, 9768270663303 + ... + 9768270663386.

It is an arithmetic number, because the mean of its divisors is an integer number (117219247960140).

Almost surely, 2^{820534735720938} is an apocalyptic number.

820534735720938 is an abundant number, since it is smaller than the sum of its proper divisors (1054973231641302).

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

820534735720938 is a wasteful number, since it uses less digits than its factorization.

820534735720938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19536541326701.

The product of its (nonzero) digits is 304819200, while the sum is 66.

The spelling of 820534735720938 in words is "eight hundred twenty trillion, five hundred thirty-four billion, seven hundred thirty-five million, seven hundred twenty thousand, nine hundred thirty-eight".