100605550555987 has 2 divisors, whose sum is σ = 100605550555988. Its totient is φ = 100605550555986.

The previous prime is 100605550555949. The next prime is 100605550555999. The reversal of 100605550555987 is 789555055506001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 100605550555987 - 2¹¹ = 100605550553939 is a prime.

It is a super-3 number, since 3×100605550555987³ (a number of 43 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (100605550555087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50302775277993 + 50302775277994.

It is an arithmetic number, because the mean of its divisors is an integer number (50302775277994).

Almost surely, 2^{100605550555987} is an apocalyptic number.

100605550555987 is a deficient number, since it is larger than the sum of its proper divisors (1).

100605550555987 is an equidigital number, since it uses as much as digits as its factorization.

100605550555987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47250000, while the sum is 61.

The spelling of 100605550555987 in words is "one hundred trillion, six hundred five billion, five hundred fifty million, five hundred fifty-five thousand, nine hundred eighty-seven".