55051565515155 has 48 divisors (see below), whose sum is σ = 104100071568480. Its totient is φ = 26691010214400.

The previous prime is 55051565515147. The next prime is 55051565515159. The reversal of 55051565515155 is 55151556515055.

55051565515155 is a `hidden beast` number, since 5 + 5 + 0 + 5 + 15 + 65 + 51 + 515 + 5 = 666.

It is not a de Polignac number, because 55051565515155 - 2³ = 55051565515147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55051565515159) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 19038495 + ... + 21738615.

It is an arithmetic number, because the mean of its divisors is an integer number (2168751491010).

Almost surely, 2^{55051565515155} is an apocalyptic number.

55051565515155 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55051565515155 is a deficient number, since it is larger than the sum of its proper divisors (49048506053325).

55051565515155 is a wasteful number, since it uses less digits than its factorization.

55051565515155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2741332 (or 2741329 counting only the distinct ones).

The product of its (nonzero) digits is 11718750, while the sum is 54.

The spelling of 55051565515155 in words is "fifty-five trillion, fifty-one billion, five hundred sixty-five million, five hundred fifteen thousand, one hundred fifty-five".