61346207999 has 4 divisors (see below), whose sum is σ = 61562979336. Its totient is φ = 61129436664.

The previous prime is 61346207947. The next prime is 61346208013. The reversal of 61346207999 is 99970264316.

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

It is a cyclic number.

It is not a de Polignac number, because 61346207999 - 2¹² = 61346203903 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 (61346207099) 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, 108385244 + ... + 108385809.

It is an arithmetic number, because the mean of its divisors is an integer number (15390744834).

Almost surely, 2^61346207999 is an apocalyptic number.

61346207999 is a deficient number, since it is larger than the sum of its proper divisors (216771337).

61346207999 is a wasteful number, since it uses less digits than its factorization.

61346207999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216771336.

The product of its (nonzero) digits is 4408992, while the sum is 56.

The spelling of 61346207999 in words is "sixty-one billion, three hundred forty-six million, two hundred seven thousand, nine hundred ninety-nine".