67768381439 has 8 divisors (see below), whose sum is σ = 73931250432. Its totient is φ = 61605863640.

The previous prime is 67768381403. The next prime is 67768381463. The reversal of 67768381439 is 93418386776.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 67768381439 - 2⁸ = 67768381183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67768381469) 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, 469532 + ... + 596654.

It is an arithmetic number, because the mean of its divisors is an integer number (9241406304).

Almost surely, 2^67768381439 is an apocalyptic number.

67768381439 is a deficient number, since it is larger than the sum of its proper divisors (6162868993).

67768381439 is a wasteful number, since it uses less digits than its factorization.

67768381439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175597.

The product of its digits is 36578304, while the sum is 62.

The spelling of 67768381439 in words is "sixty-seven billion, seven hundred sixty-eight million, three hundred eighty-one thousand, four hundred thirty-nine".