61224478605 has 24 divisors (see below), whose sum is σ = 106308327840. Its totient is φ = 32595855840.

The previous prime is 61224478537. The next prime is 61224478613. The reversal of 61224478605 is 50687442216.

61224478605 is a `hidden beast` number, since 6 + 12 + 24 + 4 + 7 + 8 + 605 = 666.

It is not a de Polignac number, because 61224478605 - 2⁸ = 61224478349 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1165675 + ... + 1217064.

It is an arithmetic number, because the mean of its divisors is an integer number (4429513660).

Almost surely, 2^61224478605 is an apocalyptic number.

It is an amenable number.

61224478605 is a deficient number, since it is larger than the sum of its proper divisors (45083849235).

61224478605 is a wasteful number, since it uses less digits than its factorization.

61224478605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2383321 (or 2383318 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The spelling of 61224478605 in words is "sixty-one billion, two hundred twenty-four million, four hundred seventy-eight thousand, six hundred five".