73917989844 has 12 divisors (see below), whose sum is σ = 172475309664. Its totient is φ = 24639329944.

The previous prime is 73917989807. The next prime is 73917989909. The reversal of 73917989844 is 44898971937.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3079916232 + ... + 3079916255.

It is an arithmetic number, because the mean of its divisors is an integer number (14372942472).

Almost surely, 2^73917989844 is an apocalyptic number.

It is an amenable number.

73917989844 is an abundant number, since it is smaller than the sum of its proper divisors (98557319820).

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

73917989844 is a wasteful number, since it uses less digits than its factorization.

73917989844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6159832494 (or 6159832492 counting only the distinct ones).

The product of its digits is 109734912, while the sum is 69.

The spelling of 73917989844 in words is "seventy-three billion, nine hundred seventeen million, nine hundred eighty-nine thousand, eight hundred forty-four".