667454053566 has 16 divisors (see below), whose sum is σ = 1405166428800. Its totient is φ = 210774964248.

The previous prime is 667454053537. The next prime is 667454053589. The reversal of 667454053566 is 665350454766.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

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, 2927429946 + ... + 2927430173.

It is an arithmetic number, because the mean of its divisors is an integer number (87822901800).

Almost surely, 2^667454053566 is an apocalyptic number.

667454053566 is an abundant number, since it is smaller than the sum of its proper divisors (737712375234).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

667454053566 is a wasteful number, since it uses less digits than its factorization.

667454053566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5854860143.

The product of its (nonzero) digits is 54432000, while the sum is 57.

The spelling of 667454053566 in words is "six hundred sixty-seven billion, four hundred fifty-four million, fifty-three thousand, five hundred sixty-six".