61605061610605 has 32 divisors (see below), whose sum is σ = 82518797537280. Its totient is φ = 43933618882560.

The previous prime is 61605061610591. The next prime is 61605061610611. The reversal of 61605061610605 is 50601616050616.

It is not a de Polignac number, because 61605061610605 - 2³³ = 61596471676013 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 248594560 + ... + 248842249.

It is an arithmetic number, because the mean of its divisors is an integer number (2578712423040).

Almost surely, 2^{61605061610605} is an apocalyptic number.

It is an amenable number.

61605061610605 is a deficient number, since it is larger than the sum of its proper divisors (20913735926675).

61605061610605 is a wasteful number, since it uses less digits than its factorization.

61605061610605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497436909.

The product of its (nonzero) digits is 194400, while the sum is 43.

The spelling of 61605061610605 in words is "sixty-one trillion, six hundred five billion, sixty-one million, six hundred ten thousand, six hundred five".