613611611405 has 8 divisors (see below), whose sum is σ = 792975005592. Its totient is φ = 453128574528.

The previous prime is 613611611401. The next prime is 613611611461. The reversal of 613611611405 is 504116116316.

It can be written as a sum of positive squares in 4 ways, for example, as 12919959556 + 600691651849 = 113666^2 + 775043^2 .

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 613611611405 - 2² = 613611611401 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 (613611611401) 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, 4720089254 + ... + 4720089383.

It is an arithmetic number, because the mean of its divisors is an integer number (99121875699).

Almost surely, 2^613611611405 is an apocalyptic number.

613611611405 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

613611611405 is a deficient number, since it is larger than the sum of its proper divisors (179363394187).

613611611405 is a wasteful number, since it uses less digits than its factorization.

613611611405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9440178655.

The product of its (nonzero) digits is 12960, while the sum is 35.

The spelling of 613611611405 in words is "six hundred thirteen billion, six hundred eleven million, six hundred eleven thousand, four hundred five".