666150650555 has 16 divisors (see below), whose sum is σ = 861261859584. Its totient is φ = 491703634560.

The previous prime is 666150650533. The next prime is 666150650567. The reversal of 666150650555 is 555056051666.

666150650555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 666150650555 - 2³² = 661855683259 is a prime.

It is a Duffinian 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, 2178356 + ... + 2465265.

It is an arithmetic number, because the mean of its divisors is an integer number (53828866224).

Almost surely, 2^666150650555 is an apocalyptic number.

666150650555 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

666150650555 is a deficient number, since it is larger than the sum of its proper divisors (195111209029).

666150650555 is a wasteful number, since it uses less digits than its factorization.

666150650555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4645846.

The product of its (nonzero) digits is 4050000, while the sum is 50.

The spelling of 666150650555 in words is "six hundred sixty-six billion, one hundred fifty million, six hundred fifty thousand, five hundred fifty-five".