73418925805 has 8 divisors (see below), whose sum is σ = 88236001944. Its totient is φ = 58646280000.

The previous prime is 73418925751. The next prime is 73418925847. The reversal of 73418925805 is 50852981437.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2950445124 + 70468480681 = 54318^2 + 265459^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-73418925805 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 11103946 + ... + 11110555.

It is an arithmetic number, because the mean of its divisors is an integer number (11029500243).

Almost surely, 2^73418925805 is an apocalyptic number.

It is an amenable number.

73418925805 is a deficient number, since it is larger than the sum of its proper divisors (14817076139).

73418925805 is a wasteful number, since it uses less digits than its factorization.

73418925805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22215167.

The product of its (nonzero) digits is 2419200, while the sum is 52.

The spelling of 73418925805 in words is "seventy-three billion, four hundred eighteen million, nine hundred twenty-five thousand, eight hundred five".