73406740073 has 4 divisors (see below), whose sum is σ = 73408030800. Its totient is φ = 73405449348.

The previous prime is 73406740031. The next prime is 73406740081. The reversal of 73406740073 is 37004760437.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 73406740073 - 2²⁰ = 73405691497 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 73406740073.

It is not an unprimeable number, because it can be changed into a prime (73406740093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 555923 + ... + 675176.

It is an arithmetic number, because the mean of its divisors is an integer number (18352007700).

Almost surely, 2^73406740073 is an apocalyptic number.

It is an amenable number.

73406740073 is a deficient number, since it is larger than the sum of its proper divisors (1290727).

73406740073 is a wasteful number, since it uses less digits than its factorization.

73406740073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1290726.

The product of its (nonzero) digits is 296352, while the sum is 41.

The spelling of 73406740073 in words is "seventy-three billion, four hundred six million, seven hundred forty thousand, seventy-three".