11534421289 has 2 divisors, whose sum is σ = 11534421290. Its totient is φ = 11534421288.

The previous prime is 11534421251. The next prime is 11534421373. The reversal of 11534421289 is 98212443511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11213115664 + 321305625 = 105892^2 + 17925^2 .

It is a cyclic number.

It is not a de Polignac number, because 11534421289 - 2⁷ = 11534421161 is a prime.

It is not a weakly prime, because it can be changed into another prime (11534421989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5767210644 + 5767210645.

It is an arithmetic number, because the mean of its divisors is an integer number (5767210645).

Almost surely, 2^11534421289 is an apocalyptic number.

It is an amenable number.

11534421289 is a deficient number, since it is larger than the sum of its proper divisors (1).

11534421289 is an equidigital number, since it uses as much as digits as its factorization.

11534421289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69120, while the sum is 40.

The spelling of 11534421289 in words is "eleven billion, five hundred thirty-four million, four hundred twenty-one thousand, two hundred eighty-nine".