101987842589 has 2 divisors, whose sum is σ = 101987842590. Its totient is φ = 101987842588.

The previous prime is 101987842531. The next prime is 101987842597. The reversal of 101987842589 is 985248789101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81872093689 + 20115748900 = 286133^2 + 141830^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101987842589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101987842889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50993921294 + 50993921295.

It is an arithmetic number, because the mean of its divisors is an integer number (50993921295).

Almost surely, 2^101987842589 is an apocalyptic number.

It is an amenable number.

101987842589 is a deficient number, since it is larger than the sum of its proper divisors (1).

101987842589 is an equidigital number, since it uses as much as digits as its factorization.

101987842589 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11612160, while the sum is 62.

The spelling of 101987842589 in words is "one hundred one billion, nine hundred eighty-seven million, eight hundred forty-two thousand, five hundred eighty-nine".