666452135546 has 16 divisors (see below), whose sum is σ = 1001336442624. Its totient is φ = 332673501264.

The previous prime is 666452135519. The next prime is 666452135579. The reversal of 666452135546 is 645531254666.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7950971 + ... + 8034353.

It is an arithmetic number, because the mean of its divisors is an integer number (62583527664).

Almost surely, 2^666452135546 is an apocalyptic number.

666452135546 is a deficient number, since it is larger than the sum of its proper divisors (334884307078).

666452135546 is a wasteful number, since it uses less digits than its factorization.

666452135546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89965.

The product of its digits is 15552000, while the sum is 53.

The spelling of 666452135546 in words is "six hundred sixty-six billion, four hundred fifty-two million, one hundred thirty-five thousand, five hundred forty-six".