145666000346666 has 4 divisors (see below), whose sum is σ = 218499000520002. Its totient is φ = 72833000173332.

The previous prime is 145666000346663. The next prime is 145666000346681. The reversal of 145666000346666 is 666643000666541.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 144549763723225 + 1116236623441 = 12022885^2 + 1056521^2 .

It is not an unprimeable number, because it can be changed into a prime (145666000346663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36416500086665 + ... + 36416500086668.

Almost surely, 2^{145666000346666} is an apocalyptic number.

145666000346666 is a deficient number, since it is larger than the sum of its proper divisors (72833000173336).

145666000346666 is an equidigital number, since it uses as much as digits as its factorization.

145666000346666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72833000173335.

The product of its (nonzero) digits is 67184640, while the sum is 59.

The spelling of 145666000346666 in words is "one hundred forty-five trillion, six hundred sixty-six billion, three hundred forty-six thousand, six hundred sixty-six".