67819537394 has 8 divisors (see below), whose sum is σ = 116262064128. Its totient is φ = 29065516020.

The previous prime is 67819537381. The next prime is 67819537411. The reversal of 67819537394 is 49373591876.

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

It is a super-2 number, since 2×67819537394² (a number of 22 digits) contains 22 as substring.

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, 2422126322 + ... + 2422126349.

It is an arithmetic number, because the mean of its divisors is an integer number (14532758016).

Almost surely, 2^67819537394 is an apocalyptic number.

67819537394 is a deficient number, since it is larger than the sum of its proper divisors (48442526734).

67819537394 is a wasteful number, since it uses less digits than its factorization.

67819537394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4844252680.

The product of its digits is 34292160, while the sum is 62.

The spelling of 67819537394 in words is "sixty-seven billion, eight hundred nineteen million, five hundred thirty-seven thousand, three hundred ninety-four".