73478094661 has 4 divisors (see below), whose sum is σ = 73479092332. Its totient is φ = 73477096992.

The previous prime is 73478094649. The next prime is 73478094709. The reversal of 73478094661 is 16649087437.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 41130273636 + 32347821025 = 202806^2 + 179855^2 .

It is a cyclic number.

It is not a de Polignac number, because 73478094661 - 2⁹ = 73478094149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73478094601) 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, 378720 + ... + 538873.

It is an arithmetic number, because the mean of its divisors is an integer number (18369773083).

Almost surely, 2^73478094661 is an apocalyptic number.

It is an amenable number.

73478094661 is a deficient number, since it is larger than the sum of its proper divisors (997671).

73478094661 is an equidigital number, since it uses as much as digits as its factorization.

73478094661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 997670.

The product of its (nonzero) digits is 6096384, while the sum is 55.

The spelling of 73478094661 in words is "seventy-three billion, four hundred seventy-eight million, ninety-four thousand, six hundred sixty-one".