61336723217 has 8 divisors (see below), whose sum is σ = 76471758912. Its totient is φ = 47794849200.

The previous prime is 61336723213. The next prime is 61336723243. The reversal of 61336723217 is 71232763316.

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

It is not a de Polignac number, because 61336723217 - 2² = 61336723213 is a prime.

It is a super-2 number, since 2×61336723217² (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 (61336723211) 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 7 ways as a sum of consecutive naturals, for example, 398290334 + ... + 398290487.

It is an arithmetic number, because the mean of its divisors is an integer number (9558969864).

Almost surely, 2^61336723217 is an apocalyptic number.

It is an amenable number.

61336723217 is a deficient number, since it is larger than the sum of its proper divisors (15135035695).

61336723217 is a wasteful number, since it uses less digits than its factorization.

61336723217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796580839.

The product of its digits is 190512, while the sum is 41.

The spelling of 61336723217 in words is "sixty-one billion, three hundred thirty-six million, seven hundred twenty-three thousand, two hundred seventeen".