67374299649 has 48 divisors (see below), whose sum is σ = 100497241728. Its totient is φ = 40004872704.

The previous prime is 67374299627. The next prime is 67374299659. The reversal of 67374299649 is 94699247376.

It is not a de Polignac number, because 67374299649 - 2⁷ = 67374299521 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 67374299649.

It is not an unprimeable number, because it can be changed into a prime (67374299609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25166499 + ... + 25169175.

It is an arithmetic number, because the mean of its divisors is an integer number (2093692536).

Almost surely, 2^67374299649 is an apocalyptic number.

It is an amenable number.

67374299649 is a deficient number, since it is larger than the sum of its proper divisors (33122942079).

67374299649 is a wasteful number, since it uses less digits than its factorization.

67374299649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4102 (or 4083 counting only the distinct ones).

The product of its digits is 123451776, while the sum is 66.

The spelling of 67374299649 in words is "sixty-seven billion, three hundred seventy-four million, two hundred ninety-nine thousand, six hundred forty-nine".