823316061820 has 48 divisors (see below), whose sum is σ = 2008351332288. Its totient is φ = 277652252160.

The previous prime is 823316061817. The next prime is 823316061823. The reversal of 823316061820 is 28160613328.

It is an interprime number because it is at equal distance from previous prime (823316061817) and next prime (823316061823).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (823316061823) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48194977 + ... + 48212056.

It is an arithmetic number, because the mean of its divisors is an integer number (41840652756).

Almost surely, 2^823316061820 is an apocalyptic number.

It is an amenable number.

823316061820 is an abundant number, since it is smaller than the sum of its proper divisors (1185035270468).

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

823316061820 is a wasteful number, since it uses less digits than its factorization.

823316061820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96407110 (or 96407108 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 40.

The spelling of 823316061820 in words is "eight hundred twenty-three billion, three hundred sixteen million, sixty-one thousand, eight hundred twenty".