100605550555999 has 2 divisors, whose sum is σ = 100605550556000. Its totient is φ = 100605550555998.

The previous prime is 100605550555987. The next prime is 100605550556081. The reversal of 100605550555999 is 999555055506001.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100605550555999 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100605550555999.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100605550555919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50302775277999 + 50302775278000.

It is an arithmetic number, because the mean of its divisors is an integer number (50302775278000).

Almost surely, 2^{100605550555999} is an apocalyptic number.

100605550555999 is a deficient number, since it is larger than the sum of its proper divisors (1).

100605550555999 is an equidigital number, since it uses as much as digits as its factorization.

100605550555999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 68343750, while the sum is 64.

The spelling of 100605550555999 in words is "one hundred trillion, six hundred five billion, five hundred fifty million, five hundred fifty-five thousand, nine hundred ninety-nine".