139255640018 has 24 divisors (see below), whose sum is σ = 233931256524. Its totient is φ = 62103710240.

The previous prime is 139255639993. The next prime is 139255640089. The reversal of 139255640018 is 810046552931.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 135039345529 + 4216294489 = 367477^2 + 64933^2 .

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 5415821 + ... + 5441472.

Almost surely, 2^139255640018 is an apocalyptic number.

139255640018 is a deficient number, since it is larger than the sum of its proper divisors (94675616506).

139255640018 is a wasteful number, since it uses less digits than its factorization.

139255640018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10857370 (or 10857359 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 44.

The spelling of 139255640018 in words is "one hundred thirty-nine billion, two hundred fifty-five million, six hundred forty thousand, eighteen".