100555105061 has 2 divisors, whose sum is σ = 100555105062. Its totient is φ = 100555105060.

The previous prime is 100555105039. The next prime is 100555105067. The reversal of 100555105061 is 160501555001.

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., 99458236900 + 1096868161 = 315370^2 + 33119^2 .

It is a cyclic number.

It is not a de Polignac number, because 100555105061 - 2²⁶ = 100487996197 is a prime.

It is a super-2 number, since 2×100555105061² (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 (100555105067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50277552530 + 50277552531.

It is an arithmetic number, because the mean of its divisors is an integer number (50277552531).

Almost surely, 2^100555105061 is an apocalyptic number.

It is an amenable number.

100555105061 is a deficient number, since it is larger than the sum of its proper divisors (1).

100555105061 is an equidigital number, since it uses as much as digits as its factorization.

100555105061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3750, while the sum is 29.

The spelling of 100555105061 in words is "one hundred billion, five hundred fifty-five million, one hundred five thousand, sixty-one".