73396844820 has 384 divisors, whose sum is σ = 262164833280. Its totient is φ = 16887398400.

The previous prime is 73396844813. The next prime is 73396844849. The reversal of 73396844820 is 2844869337.

73396844820 is a `hidden beast` number, since 73 + 3 + 96 + 8 + 4 + 482 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 18018304 + ... + 18022376.

It is an arithmetic number, because the mean of its divisors is an integer number (682720920).

Almost surely, 2^73396844820 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 73396844820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131082416640).

73396844820 is an abundant number, since it is smaller than the sum of its proper divisors (188767988460).

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

73396844820 is a wasteful number, since it uses less digits than its factorization.

73396844820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4272 (or 4264 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 54.

The spelling of 73396844820 in words is "seventy-three billion, three hundred ninety-six million, eight hundred forty-four thousand, eight hundred twenty".