73817970660 has 288 divisors, whose sum is σ = 264639578112. Its totient is φ = 16298599680.

The previous prime is 73817970637. The next prime is 73817970749. The reversal of 73817970660 is 6607971837.

It is a junction number, because it is equal to n+sod(n) for n = 73817970597 and 73817970606.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 26676597 + ... + 26679363.

It is an arithmetic number, because the mean of its divisors is an integer number (918887424).

Almost surely, 2^73817970660 is an apocalyptic number.

73817970660 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 73817970660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132319789056).

73817970660 is an abundant number, since it is smaller than the sum of its proper divisors (190821607452).

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

73817970660 is a wasteful number, since it uses less digits than its factorization.

73817970660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3503 (or 3498 counting only the distinct ones).

The product of its (nonzero) digits is 2667168, while the sum is 54.

The spelling of 73817970660 in words is "seventy-three billion, eight hundred seventeen million, nine hundred seventy thousand, six hundred sixty".