55550555504985 has 32 divisors (see below), whose sum is σ = 92781547879680. Its totient is φ = 28327750818048.

The previous prime is 55550555504957. The next prime is 55550555504987. The reversal of 55550555504985 is 58940555505555.

It is a happy number.

It is not a de Polignac number, because 55550555504985 - 2⁹ = 55550555504473 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55550555504987) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30603190 + ... + 32367519.

It is an arithmetic number, because the mean of its divisors is an integer number (2899423371240).

Almost surely, 2^{55550555504985} is an apocalyptic number.

It is an amenable number.

55550555504985 is a deficient number, since it is larger than the sum of its proper divisors (37230992374695).

55550555504985 is a wasteful number, since it uses less digits than its factorization.

55550555504985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62973297.

The product of its (nonzero) digits is 562500000, while the sum is 66.

The spelling of 55550555504985 in words is "fifty-five trillion, five hundred fifty billion, five hundred fifty-five million, five hundred four thousand, nine hundred eighty-five".