100666600051559 has 2 divisors, whose sum is σ = 100666600051560. Its totient is φ = 100666600051558.

The previous prime is 100666600051553. The next prime is 100666600051673. The reversal of 100666600051559 is 955150006666001.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100666600051559 - 2⁴ = 100666600051543 is a prime.

It is a super-2 number, since 2×100666600051559² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100666600051553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50333300025779 + 50333300025780.

It is an arithmetic number, because the mean of its divisors is an integer number (50333300025780).

Almost surely, 2^{100666600051559} is an apocalyptic number.

100666600051559 is a deficient number, since it is larger than the sum of its proper divisors (1).

100666600051559 is an equidigital number, since it uses as much as digits as its factorization.

100666600051559 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1458000, while the sum is 50.

The spelling of 100666600051559 in words is "one hundred trillion, six hundred sixty-six billion, six hundred million, fifty-one thousand, five hundred fifty-nine".