100099999997 has 2 divisors, whose sum is σ = 100099999998. Its totient is φ = 100099999996.

The previous prime is 100099999963. The next prime is 100100000003. The reversal of 100099999997 is 799999990001.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71906567716 + 28193432281 = 268154^2 + 167909^2 .

It is a cyclic number.

It is not a de Polignac number, because 100099999997 - 2¹⁸ = 100099737853 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100099999997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100099999697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50049999998 + 50049999999.

It is an arithmetic number, because the mean of its divisors is an integer number (50049999999).

Almost surely, 2^100099999997 is an apocalyptic number.

It is an amenable number.

100099999997 is a deficient number, since it is larger than the sum of its proper divisors (1).

100099999997 is an equidigital number, since it uses as much as digits as its factorization.

100099999997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 33480783, while the sum is 71.

The spelling of 100099999997 in words is "one hundred billion, ninety-nine million, nine hundred ninety-nine thousand, nine hundred ninety-seven".