2123432104009 has 2 divisors, whose sum is σ = 2123432104010. Its totient is φ = 2123432104008.

The previous prime is 2123432103997. The next prime is 2123432104081. The reversal of 2123432104009 is 9004012343212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1219036810000 + 904395294009 = 1104100^2 + 950997^2 .

It is a cyclic number.

It is not a de Polignac number, because 2123432104009 - 2¹⁹ = 2123431579721 is a prime.

It is not a weakly prime, because it can be changed into another prime (2123432104099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061716052004 + 1061716052005.

It is an arithmetic number, because the mean of its divisors is an integer number (1061716052005).

Almost surely, 2^{2123432104009} is an apocalyptic number.

It is an amenable number.

2123432104009 is a deficient number, since it is larger than the sum of its proper divisors (1).

2123432104009 is an equidigital number, since it uses as much as digits as its factorization.

2123432104009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 31.

The spelling of 2123432104009 in words is "two trillion, one hundred twenty-three billion, four hundred thirty-two million, one hundred four thousand, nine".