139436293378 has 8 divisors (see below), whose sum is σ = 209221723260. Its totient is φ = 69695718960.

The previous prime is 139436293343. The next prime is 139436293379. The reversal of 139436293378 is 873392634931.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 136185355089 + 3250938289 = 369033^2 + 57017^2 .

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

It is not an unprimeable number, because it can be changed into a prime (139436293379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11206093 + ... + 11218528.

Almost surely, 2^139436293378 is an apocalyptic number.

139436293378 is a deficient number, since it is larger than the sum of its proper divisors (69785429882).

139436293378 is a wasteful number, since it uses less digits than its factorization.

139436293378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22427732.

The product of its digits is 17635968, while the sum is 58.

The spelling of 139436293378 in words is "one hundred thirty-nine billion, four hundred thirty-six million, two hundred ninety-three thousand, three hundred seventy-eight".