100040263025666 has 4 divisors (see below), whose sum is σ = 150060394538502. Its totient is φ = 50020131512832.

The previous prime is 100040263025639. The next prime is 100040263025711. The reversal of 100040263025666 is 666520362040001.

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., 94738199556025 + 5302063469641 = 9733355^2 + 2302621^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25010065756415 + ... + 25010065756418.

Almost surely, 2^{100040263025666} is an apocalyptic number.

100040263025666 is a deficient number, since it is larger than the sum of its proper divisors (50020131512836).

100040263025666 is an equidigital number, since it uses as much as digits as its factorization.

100040263025666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50020131512835.

The product of its (nonzero) digits is 311040, while the sum is 41.

The spelling of 100040263025666 in words is "one hundred trillion, forty billion, two hundred sixty-three million, twenty-five thousand, six hundred sixty-six".