67781040099398 has 8 divisors (see below), whose sum is σ = 101767206022608. Its totient is φ = 33858638091864.

The previous prime is 67781040099341. The next prime is 67781040099449. The reversal of 67781040099398 is 89399004018776.

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 15940976261 + ... + 15940980512.

It is an arithmetic number, because the mean of its divisors is an integer number (12720900752826).

Almost surely, 2^{67781040099398} is an apocalyptic number.

67781040099398 is a deficient number, since it is larger than the sum of its proper divisors (33986165923210).

67781040099398 is a wasteful number, since it uses less digits than its factorization.

67781040099398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31881957838.

The product of its (nonzero) digits is 164602368, while the sum is 71.

The spelling of 67781040099398 in words is "sixty-seven trillion, seven hundred eighty-one billion, forty million, ninety-nine thousand, three hundred ninety-eight".