666645147440102 has 8 divisors (see below), whose sum is σ = 999968709241200. Its totient is φ = 333322244359704.

The previous prime is 666645147440093. The next prime is 666645147440117. The reversal of 666645147440102 is 201044741546666.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162142277 + ... + 166202912.

It is an arithmetic number, because the mean of its divisors is an integer number (124996088655150).

Almost surely, 2^{666645147440102} is an apocalyptic number.

666645147440102 is a deficient number, since it is larger than the sum of its proper divisors (333323561801098).

666645147440102 is a wasteful number, since it uses less digits than its factorization.

666645147440102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329360350.

The product of its (nonzero) digits is 23224320, while the sum is 56.

Adding to 666645147440102 its reverse (201044741546666), we get a palindrome (867689888986768).

The spelling of 666645147440102 in words is "six hundred sixty-six trillion, six hundred forty-five billion, one hundred forty-seven million, four hundred forty thousand, one hundred two".