101993666597 has 2 divisors, whose sum is σ = 101993666598. Its totient is φ = 101993666596.

The previous prime is 101993666563. The next prime is 101993666647. The reversal of 101993666597 is 795666399101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67558926241 + 34434740356 = 259921^2 + 185566^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101993666597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101993666557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50996833298 + 50996833299.

It is an arithmetic number, because the mean of its divisors is an integer number (50996833299).

Almost surely, 2^101993666597 is an apocalyptic number.

It is an amenable number.

101993666597 is a deficient number, since it is larger than the sum of its proper divisors (1).

101993666597 is an equidigital number, since it uses as much as digits as its factorization.

101993666597 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16533720, while the sum is 62.

The spelling of 101993666597 in words is "one hundred one billion, nine hundred ninety-three million, six hundred sixty-six thousand, five hundred ninety-seven".