67509012469 has 2 divisors, whose sum is σ = 67509012470. Its totient is φ = 67509012468.

The previous prime is 67509012433. The next prime is 67509012481. The reversal of 67509012469 is 96421090576.

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., 67321048369 + 187964100 = 259463^2 + 13710^2 .

It is a cyclic number.

It is not a de Polignac number, because 67509012469 - 2¹⁷ = 67508881397 is a prime.

It is a super-2 number, since 2×67509012469² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67509012569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33754506234 + 33754506235.

It is an arithmetic number, because the mean of its divisors is an integer number (33754506235).

Almost surely, 2^67509012469 is an apocalyptic number.

It is an amenable number.

67509012469 is a deficient number, since it is larger than the sum of its proper divisors (1).

67509012469 is an equidigital number, since it uses as much as digits as its factorization.

67509012469 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 816480, while the sum is 49.

The spelling of 67509012469 in words is "sixty-seven billion, five hundred nine million, twelve thousand, four hundred sixty-nine".