100804648666 has 4 divisors (see below), whose sum is σ = 151206973002. Its totient is φ = 50402324332.

The previous prime is 100804648663. The next prime is 100804648667. The reversal of 100804648666 is 666846408001.

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., 94722988441 + 6081660225 = 307771^2 + 77985^2 .

It is not an unprimeable number, because it can be changed into a prime (100804648661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25201162165 + ... + 25201162168.

Almost surely, 2^100804648666 is an apocalyptic number.

100804648666 is a deficient number, since it is larger than the sum of its proper divisors (50402324336).

100804648666 is an equidigital number, since it uses as much as digits as its factorization.

100804648666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50402324335.

The product of its (nonzero) digits is 1327104, while the sum is 49.

The spelling of 100804648666 in words is "one hundred billion, eight hundred four million, six hundred forty-eight thousand, six hundred sixty-six".