61733620409 has 8 divisors (see below), whose sum is σ = 62684860392. Its totient is φ = 60785233920.

The previous prime is 61733620393. The next prime is 61733620411. The reversal of 61733620409 is 90402633716.

It can be written as a sum of positive squares in 4 ways, for example, as 14892541225 + 46841079184 = 122035^2 + 216428^2 .

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 61733620409 - 2⁴ = 61733620393 is a prime.

It is a super-2 number, since 2×61733620409² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61733629409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 669752 + ... + 756329.

It is an arithmetic number, because the mean of its divisors is an integer number (7835607549).

Almost surely, 2^61733620409 is an apocalyptic number.

It is an amenable number.

61733620409 is a deficient number, since it is larger than the sum of its proper divisors (951239983).

61733620409 is a wasteful number, since it uses less digits than its factorization.

61733620409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1426747.

The product of its (nonzero) digits is 163296, while the sum is 41.

The spelling of 61733620409 in words is "sixty-one billion, seven hundred thirty-three million, six hundred twenty thousand, four hundred nine".