100066666166651 has 4 divisors (see below), whose sum is σ = 100067996614872. Its totient is φ = 100065335718432.

The previous prime is 100066666166633. The next prime is 100066666166659. The reversal of 100066666166651 is 156661666660001.

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

It is a cyclic number.

It is not a de Polignac number, because 100066666166651 - 2³⁰ = 100065592424827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100066666166659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 665111285 + ... + 665261718.

It is an arithmetic number, because the mean of its divisors is an integer number (25016999153718).

Almost surely, 2^{100066666166651} is an apocalyptic number.

100066666166651 is a deficient number, since it is larger than the sum of its proper divisors (1330448221).

100066666166651 is an equidigital number, since it uses as much as digits as its factorization.

100066666166651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1330448220.

The product of its (nonzero) digits is 8398080, while the sum is 56.

The spelling of 100066666166651 in words is "one hundred trillion, sixty-six billion, six hundred sixty-six million, one hundred sixty-six thousand, six hundred fifty-one".