73844820673812 has 72 divisors (see below), whose sum is σ = 197119474493760. Its totient is φ = 23244434939520.

The previous prime is 73844820673781. The next prime is 73844820673861. The reversal of 73844820673812 is 21837602844837.

73844820673812 is a `hidden beast` number, since 7 + 3 + 8 + 4 + 48 + 206 + 7 + 381 + 2 = 666.

It is a super-2 number, since 2×73844820673812² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 73844820673812.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 173356833 + ... + 173782280.

It is an arithmetic number, because the mean of its divisors is an integer number (2737770479080).

Almost surely, 2^{73844820673812} is an apocalyptic number.

It is an amenable number.

73844820673812 is an abundant number, since it is smaller than the sum of its proper divisors (123274653819948).

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

73844820673812 is a wasteful number, since it uses less digits than its factorization.

73844820673812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347139453 (or 347139448 counting only the distinct ones).

The product of its (nonzero) digits is 86704128, while the sum is 63.

The spelling of 73844820673812 in words is "seventy-three trillion, eight hundred forty-four billion, eight hundred twenty million, six hundred seventy-three thousand, eight hundred twelve".