71904794505505 has 8 divisors (see below), whose sum is σ = 92923119053352. Its totient is φ = 53098925173248.

The previous prime is 71904794505499. The next prime is 71904794505529. The reversal of 71904794505505 is 50550549740917.

71904794505505 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 11963567227921 + 59941227277584 = 3458839^2 + 7742172^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 71904794505505 - 2⁴¹ = 69705771249953 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 553113803824 + ... + 553113803953.

It is an arithmetic number, because the mean of its divisors is an integer number (11615389881669).

Almost surely, 2^{71904794505505} is an apocalyptic number.

It is an amenable number.

71904794505505 is a deficient number, since it is larger than the sum of its proper divisors (21018324547847).

71904794505505 is a wasteful number, since it uses less digits than its factorization.

71904794505505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1106227607795.

The product of its (nonzero) digits is 39690000, while the sum is 61.

The spelling of 71904794505505 in words is "seventy-one trillion, nine hundred four billion, seven hundred ninety-four million, five hundred five thousand, five hundred five".