139515983378 has 16 divisors (see below), whose sum is σ = 210757799616. Its totient is φ = 69264583920.

The previous prime is 139515983377. The next prime is 139515983389. The reversal of 139515983378 is 873389515931.

139515983378 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 139515983378.

It is not an unprimeable number, because it can be changed into a prime (139515983377) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 66926 + ... + 532457.

It is an arithmetic number, because the mean of its divisors is an integer number (13172362476).

Almost surely, 2^139515983378 is an apocalyptic number.

139515983378 is a deficient number, since it is larger than the sum of its proper divisors (71241816238).

139515983378 is a wasteful number, since it uses less digits than its factorization.

139515983378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600209.

The product of its digits is 24494400, while the sum is 62.

The spelling of 139515983378 in words is "one hundred thirty-nine billion, five hundred fifteen million, nine hundred eighty-three thousand, three hundred seventy-eight".