61423313805 has 48 divisors (see below), whose sum is σ = 124644409344. Its totient is φ = 27394364160.

The previous prime is 61423313801. The next prime is 61423313813. The reversal of 61423313805 is 50831332416.

61423313805 is a `hidden beast` number, since 614 + 2 + 3 + 3 + 1 + 38 + 0 + 5 = 666.

It is not a de Polignac number, because 61423313805 - 2² = 61423313801 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61423313805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61423313801) 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 47 ways as a sum of consecutive naturals, for example, 2365069 + ... + 2390898.

It is an arithmetic number, because the mean of its divisors is an integer number (2596758528).

Almost surely, 2^61423313805 is an apocalyptic number.

It is an amenable number.

61423313805 is an abundant number, since it is smaller than the sum of its proper divisors (63221095539).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61423313805 is a wasteful number, since it uses less digits than its factorization.

61423313805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4756026 (or 4756023 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The spelling of 61423313805 in words is "sixty-one billion, four hundred twenty-three million, three hundred thirteen thousand, eight hundred five".