666466542115 has 16 divisors (see below), whose sum is σ = 893744935776. Its totient is φ = 472880915200.

The previous prime is 666466542089. The next prime is 666466542149. The reversal of 666466542115 is 511245664666.

It is not a de Polignac number, because 666466542115 - 2⁵ = 666466542083 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, 147773032 + ... + 147777541.

It is an arithmetic number, because the mean of its divisors is an integer number (55859058486).

Almost surely, 2^666466542115 is an apocalyptic number.

666466542115 is a deficient number, since it is larger than the sum of its proper divisors (227278393661).

666466542115 is a wasteful number, since it uses less digits than its factorization.

666466542115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295550630.

The product of its digits is 6220800, while the sum is 52.

The spelling of 666466542115 in words is "six hundred sixty-six billion, four hundred sixty-six million, five hundred forty-two thousand, one hundred fifteen".