66530115015 has 32 divisors (see below), whose sum is σ = 131013152256. Its totient is φ = 28074245760.

The previous prime is 66530114999. The next prime is 66530115073. The reversal of 66530115015 is 51051103566.

It is not a de Polignac number, because 66530115015 - 2⁴ = 66530114999 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24368641 + ... + 24371370.

It is an arithmetic number, because the mean of its divisors is an integer number (4094161008).

Almost surely, 2^66530115015 is an apocalyptic number.

66530115015 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

66530115015 is a deficient number, since it is larger than the sum of its proper divisors (64483037241).

66530115015 is a wasteful number, since it uses less digits than its factorization.

66530115015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48740039.

The product of its (nonzero) digits is 13500, while the sum is 33.

The spelling of 66530115015 in words is "sixty-six billion, five hundred thirty million, one hundred fifteen thousand, fifteen".