15550055005555 has 32 divisors (see below), whose sum is σ = 22061745469440. Its totient is φ = 10294936444800.

The previous prime is 15550055005501. The next prime is 15550055005561. The reversal of 15550055005555 is 55550055005551.

It is a happy number.

It is not a de Polignac number, because 15550055005555 - 2¹⁷ = 15550054874483 is a prime.

It is a super-2 number, since 2×15550055005555² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42638230 + ... + 43001380.

It is an arithmetic number, because the mean of its divisors is an integer number (689429545920).

Almost surely, 2^{15550055005555} is an apocalyptic number.

15550055005555 is a deficient number, since it is larger than the sum of its proper divisors (6511690463885).

15550055005555 is a wasteful number, since it uses less digits than its factorization.

15550055005555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405379.

The product of its (nonzero) digits is 1953125, while the sum is 46.

The spelling of 15550055005555 in words is "fifteen trillion, five hundred fifty billion, fifty-five million, five thousand, five hundred fifty-five".