101009857987 has 2 divisors, whose sum is σ = 101009857988. Its totient is φ = 101009857986.

The previous prime is 101009857973. The next prime is 101009857997. The reversal of 101009857987 is 789758900101.

It is a strong prime.

It is an emirp because it is prime and its reverse (789758900101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 101009857987 - 2¹⁵ = 101009825219 is a prime.

It is not a weakly prime, because it can be changed into another prime (101009857997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50504928993 + 50504928994.

It is an arithmetic number, because the mean of its divisors is an integer number (50504928994).

Almost surely, 2^101009857987 is an apocalyptic number.

101009857987 is a deficient number, since it is larger than the sum of its proper divisors (1).

101009857987 is an equidigital number, since it uses as much as digits as its factorization.

101009857987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1270080, while the sum is 55.

The spelling of 101009857987 in words is "one hundred one billion, nine million, eight hundred fifty-seven thousand, nine hundred eighty-seven".