67129459449 has 16 divisors (see below), whose sum is σ = 98742021504. Its totient is φ = 40302864000.

The previous prime is 67129459429. The next prime is 67129459487. The reversal of 67129459449 is 94495492176.

It is not a de Polignac number, because 67129459449 - 2⁷ = 67129459321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 67129459392 and 67129459401.

It is not an unprimeable number, because it can be changed into a prime (67129459429) 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 15 ways as a sum of consecutive naturals, for example, 20989477 + ... + 20992674.

It is an arithmetic number, because the mean of its divisors is an integer number (6171376344).

Almost surely, 2^67129459449 is an apocalyptic number.

It is an amenable number.

67129459449 is a deficient number, since it is larger than the sum of its proper divisors (31612562055).

67129459449 is a wasteful number, since it uses less digits than its factorization.

67129459449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41982208.

The product of its digits is 19595520, while the sum is 60.

The spelling of 67129459449 in words is "sixty-seven billion, one hundred twenty-nine million, four hundred fifty-nine thousand, four hundred forty-nine".