61223437605 has 16 divisors (see below), whose sum is σ = 106862727744. Its totient is φ = 29684090880.

The previous prime is 61223437601. The next prime is 61223437607. The reversal of 61223437605 is 50673432216.

It is not a de Polignac number, because 61223437605 - 2² = 61223437601 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61223437601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185525404 + ... + 185525733.

It is an arithmetic number, because the mean of its divisors is an integer number (6678920484).

Almost surely, 2^61223437605 is an apocalyptic number.

It is an amenable number.

61223437605 is a deficient number, since it is larger than the sum of its proper divisors (45639290139).

61223437605 is a wasteful number, since it uses less digits than its factorization.

61223437605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371051156.

The product of its (nonzero) digits is 181440, while the sum is 39.

The spelling of 61223437605 in words is "sixty-one billion, two hundred twenty-three million, four hundred thirty-seven thousand, six hundred five".