55061643603545 has 8 divisors (see below), whose sum is σ = 66188485278024. Its totient is φ = 43972972913664.

The previous prime is 55061643603517. The next prime is 55061643603559. The reversal of 55061643603545 is 54530634616055.

It can be written as a sum of positive squares in 4 ways, for example, as 27624915795481 + 27436727808064 = 5255941^2 + 5238008^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55061643603545 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9542742974 + ... + 9542748743.

It is an arithmetic number, because the mean of its divisors is an integer number (8273560659753).

Almost surely, 2^{55061643603545} is an apocalyptic number.

It is an amenable number.

55061643603545 is a deficient number, since it is larger than the sum of its proper divisors (11126841674479).

55061643603545 is a wasteful number, since it uses less digits than its factorization.

55061643603545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19085492299.

The product of its (nonzero) digits is 19440000, while the sum is 53.

The spelling of 55061643603545 in words is "fifty-five trillion, sixty-one billion, six hundred forty-three million, six hundred three thousand, five hundred forty-five".