55515151665115 has 16 divisors (see below), whose sum is σ = 67747800808800. Its totient is φ = 43659053171712.

The previous prime is 55515151665013. The next prime is 55515151665143. The reversal of 55515151665115 is 51156615151555.

It is a cyclic number.

It is not a de Polignac number, because 55515151665115 - 2²⁹ = 55514614794203 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44613601 + ... + 45841069.

It is an arithmetic number, because the mean of its divisors is an integer number (4234237550550).

Almost surely, 2^{55515151665115} is an apocalyptic number.

55515151665115 is a deficient number, since it is larger than the sum of its proper divisors (12232649143685).

55515151665115 is a wasteful number, since it uses less digits than its factorization.

55515151665115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1380846.

The product of its digits is 2812500, while the sum is 52.

The spelling of 55515151665115 in words is "fifty-five trillion, five hundred fifteen billion, one hundred fifty-one million, six hundred sixty-five thousand, one hundred fifteen".