55661614569 has 12 divisors (see below), whose sum is σ = 87709210992. Its totient is φ = 33734311800.

The previous prime is 55661614549. The next prime is 55661614621. The reversal of 55661614569 is 96541616655.

55661614569 is a `hidden beast` number, since 5 + 5 + 6 + 61 + 6 + 14 + 569 = 666.

It is not a de Polignac number, because 55661614569 - 2⁸ = 55661614313 is a prime.

It is a super-2 number, since 2×55661614569² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55661614549) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 281119167 + ... + 281119364.

It is an arithmetic number, because the mean of its divisors is an integer number (7309100916).

Almost surely, 2^55661614569 is an apocalyptic number.

It is an amenable number.

55661614569 is a deficient number, since it is larger than the sum of its proper divisors (32047596423).

55661614569 is a wasteful number, since it uses less digits than its factorization.

55661614569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562238548 (or 562238545 counting only the distinct ones).

The product of its digits is 5832000, while the sum is 54.

The spelling of 55661614569 in words is "fifty-five billion, six hundred sixty-one million, six hundred fourteen thousand, five hundred sixty-nine".