108900001061 has 2 divisors, whose sum is σ = 108900001062. Its totient is φ = 108900001060.

The previous prime is 108900001037. The next prime is 108900001163. The reversal of 108900001061 is 160100009801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77997876961 + 30902124100 = 279281^2 + 175790^2 .

It is a cyclic number.

It is not a de Polignac number, because 108900001061 - 2¹⁸ = 108899738917 is a prime.

It is a super-2 number, since 2×108900001061² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 108900001061.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (108900001261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54450000530 + 54450000531.

It is an arithmetic number, because the mean of its divisors is an integer number (54450000531).

Almost surely, 2^108900001061 is an apocalyptic number.

It is an amenable number.

108900001061 is a deficient number, since it is larger than the sum of its proper divisors (1).

108900001061 is an equidigital number, since it uses as much as digits as its factorization.

108900001061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 26.

The spelling of 108900001061 in words is "one hundred eight billion, nine hundred million, one thousand, sixty-one".