65349249619 has 12 divisors (see below), whose sum is σ = 69526938384. Its totient is φ = 61409938304.

The previous prime is 65349249601. The next prime is 65349249643. The reversal of 65349249619 is 91694294356.

It is a happy number.

It is not a de Polignac number, because 65349249619 - 2⁵ = 65349249587 is a prime.

It is a super-2 number, since 2×65349249619² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65349249689) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12237 + ... + 361729.

It is an arithmetic number, because the mean of its divisors is an integer number (5793911532).

Almost surely, 2^65349249619 is an apocalyptic number.

65349249619 is a deficient number, since it is larger than the sum of its proper divisors (4177688765).

65349249619 is a wasteful number, since it uses less digits than its factorization.

65349249619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350174 (or 350157 counting only the distinct ones).

The product of its digits is 12597120, while the sum is 58.

The spelling of 65349249619 in words is "sixty-five billion, three hundred forty-nine million, two hundred forty-nine thousand, six hundred nineteen".