145133889409 has 2 divisors, whose sum is σ = 145133889410. Its totient is φ = 145133889408.

The previous prime is 145133889403. The next prime is 145133889449. The reversal of 145133889409 is 904988331541.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90613040400 + 54520849009 = 301020^2 + 233497^2 .

It is a cyclic number.

It is not a de Polignac number, because 145133889409 - 2¹⁷ = 145133758337 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 145133889409.

It is not a weakly prime, because it can be changed into another prime (145133889403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72566944704 + 72566944705.

It is an arithmetic number, because the mean of its divisors is an integer number (72566944705).

Almost surely, 2^145133889409 is an apocalyptic number.

It is an amenable number.

145133889409 is a deficient number, since it is larger than the sum of its proper divisors (1).

145133889409 is an equidigital number, since it uses as much as digits as its factorization.

145133889409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3732480, while the sum is 55.

The spelling of 145133889409 in words is "one hundred forty-five billion, one hundred thirty-three million, eight hundred eighty-nine thousand, four hundred nine".