73406516666 has 8 divisors (see below), whose sum is σ = 125839742880. Its totient is φ = 31459935708.

The previous prime is 73406516657. The next prime is 73406516669. The reversal of 73406516666 is 66661560437.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-4 number, since 4×73406516666⁴ (a number of 45 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (73406516669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2621661296 + ... + 2621661323.

It is an arithmetic number, because the mean of its divisors is an integer number (15729967860).

Almost surely, 2^73406516666 is an apocalyptic number.

73406516666 is a deficient number, since it is larger than the sum of its proper divisors (52433226214).

73406516666 is a wasteful number, since it uses less digits than its factorization.

73406516666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5243322628.

The product of its (nonzero) digits is 3265920, while the sum is 50.

The spelling of 73406516666 in words is "seventy-three billion, four hundred six million, five hundred sixteen thousand, six hundred sixty-six".