73866817536 has 104 divisors (see below), whose sum is σ = 201759270384. Its totient is φ = 24021565440.

The previous prime is 73866817517. The next prime is 73866817537. The reversal of 73866817536 is 63571866837.

It is a super-2 number, since 2×73866817536² (a number of 23 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 73866817536.

It is not an unprimeable number, because it can be changed into a prime (73866817537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 430500 + ... + 577116.

Almost surely, 2^73866817536 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 73866817536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100879635192).

73866817536 is an abundant number, since it is smaller than the sum of its proper divisors (127892452848).

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

73866817536 is a wasteful number, since it uses less digits than its factorization.

73866817536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146685 (or 146663 counting only the distinct ones).

The product of its digits is 30481920, while the sum is 60.

The spelling of 73866817536 in words is "seventy-three billion, eight hundred sixty-six million, eight hundred seventeen thousand, five hundred thirty-six".