67440078299 has 8 divisors (see below), whose sum is σ = 74179020720. Its totient is φ = 61309160880.

The previous prime is 67440078281. The next prime is 67440078313. The reversal of 67440078299 is 99287004476.

It is not a de Polignac number, because 67440078299 - 2²⁴ = 67423301083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67440068299) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25333034 + ... + 25335695.

It is an arithmetic number, because the mean of its divisors is an integer number (9272377590).

Almost surely, 2^67440078299 is an apocalyptic number.

67440078299 is a deficient number, since it is larger than the sum of its proper divisors (6738942421).

67440078299 is an equidigital number, since it uses as much as digits as its factorization.

67440078299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50668762 (or 50668740 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 56.

The spelling of 67440078299 in words is "sixty-seven billion, four hundred forty million, seventy-eight thousand, two hundred ninety-nine".