73406666736 has 60 divisors (see below), whose sum is σ = 221239542888. Its totient is φ = 22586666112.

The previous prime is 73406666681. The next prime is 73406666741. The reversal of 73406666736 is 63766660437.

It is a super-3 number, since 3×73406666736³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19604610 + ... + 19608353.

Almost surely, 2^73406666736 is an apocalyptic number.

It is an amenable number.

73406666736 is an abundant number, since it is smaller than the sum of its proper divisors (147832876152).

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

73406666736 is a wasteful number, since it uses less digits than its factorization.

73406666736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39212990 (or 39212981 counting only the distinct ones).

The product of its (nonzero) digits is 13716864, while the sum is 54.

The spelling of 73406666736 in words is "seventy-three billion, four hundred six million, six hundred sixty-six thousand, seven hundred thirty-six".