100555104989 has 2 divisors, whose sum is σ = 100555104990. Its totient is φ = 100555104988.

The previous prime is 100555104929. The next prime is 100555105033. The reversal of 100555104989 is 989401555001.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57093279364 + 43461825625 = 238942^2 + 208475^2 .

It is an emirp because it is prime and its reverse (989401555001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100555104989 - 2²⁸ = 100286669533 is a prime.

It is a super-2 number, since 2×100555104989² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100555104929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50277552494 + 50277552495.

It is an arithmetic number, because the mean of its divisors is an integer number (50277552495).

Almost surely, 2^100555104989 is an apocalyptic number.

It is an amenable number.

100555104989 is a deficient number, since it is larger than the sum of its proper divisors (1).

100555104989 is an equidigital number, since it uses as much as digits as its factorization.

100555104989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324000, while the sum is 47.

The spelling of 100555104989 in words is "one hundred billion, five hundred fifty-five million, one hundred four thousand, nine hundred eighty-nine".