61224553551 has 16 divisors (see below), whose sum is σ = 93304021248. Its totient is φ = 34981910400.

The previous prime is 61224553549. The next prime is 61224553583. The reversal of 61224553551 is 15535542216.

It is not a de Polignac number, because 61224553551 - 2¹ = 61224553549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61224553451) 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, 71671 + ... + 357191.

It is an arithmetic number, because the mean of its divisors is an integer number (5831501328).

Almost surely, 2^61224553551 is an apocalyptic number.

61224553551 is a deficient number, since it is larger than the sum of its proper divisors (32079467697).

61224553551 is a wasteful number, since it uses less digits than its factorization.

61224553551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295742.

The product of its digits is 180000, while the sum is 39.

The spelling of 61224553551 in words is "sixty-one billion, two hundred twenty-four million, five hundred fifty-three thousand, five hundred fifty-one".