66055015115 has 16 divisors (see below), whose sum is σ = 79913757600. Its totient is φ = 52412855040.

The previous prime is 66055015097. The next prime is 66055015121. The reversal of 66055015115 is 51151055066.

It is not a de Polignac number, because 66055015115 - 2¹⁴ = 66054998731 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, 760961 + ... + 843309.

It is an arithmetic number, because the mean of its divisors is an integer number (4994609850).

Almost surely, 2^66055015115 is an apocalyptic number.

66055015115 is a deficient number, since it is larger than the sum of its proper divisors (13858742485).

66055015115 is a wasteful number, since it uses less digits than its factorization.

66055015115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83662.

The product of its (nonzero) digits is 22500, while the sum is 35.

The spelling of 66055015115 in words is "sixty-six billion, fifty-five million, fifteen thousand, one hundred fifteen".