11515010005655 has 16 divisors (see below), whose sum is σ = 15048137543040. Its totient is φ = 8407848269568.

The previous prime is 11515010005649. The next prime is 11515010005673. The reversal of 11515010005655 is 55650001051511.

It is a cyclic number.

It is not a de Polignac number, because 11515010005655 - 2¹⁸ = 11515009743511 is a prime.

It is a congruent number.

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, 995241407 + ... + 995252976.

It is an arithmetic number, because the mean of its divisors is an integer number (940508596440).

Almost surely, 2^{11515010005655} is an apocalyptic number.

11515010005655 is a deficient number, since it is larger than the sum of its proper divisors (3533127537385).

11515010005655 is a wasteful number, since it uses less digits than its factorization.

11515010005655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1990494490.

The product of its (nonzero) digits is 18750, while the sum is 35.

The spelling of 11515010005655 in words is "eleven trillion, five hundred fifteen billion, ten million, five thousand, six hundred fifty-five".