101066665597 has 2 divisors, whose sum is σ = 101066665598. Its totient is φ = 101066665596.

The previous prime is 101066665571. The next prime is 101066665627. The reversal of 101066665597 is 795566660101.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 98964351396 + 2102314201 = 314586^2 + 45851^2 .

It is a cyclic number.

It is not a de Polignac number, because 101066665597 - 2³⁵ = 66706927229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101066665547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50533332798 + 50533332799.

It is an arithmetic number, because the mean of its divisors is an integer number (50533332799).

Almost surely, 2^101066665597 is an apocalyptic number.

It is an amenable number.

101066665597 is a deficient number, since it is larger than the sum of its proper divisors (1).

101066665597 is an equidigital number, since it uses as much as digits as its factorization.

101066665597 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2041200, while the sum is 52.

The spelling of 101066665597 in words is "one hundred one billion, sixty-six million, six hundred sixty-five thousand, five hundred ninety-seven".