139955438828 has 6 divisors (see below), whose sum is σ = 244922017956. Its totient is φ = 69977719412.

The previous prime is 139955438797. The next prime is 139955438837. The reversal of 139955438828 is 828834559931.

139955438828 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 as a sum of consecutive naturals, namely, 17494429850 + ... + 17494429857.

It is an arithmetic number, because the mean of its divisors is an integer number (40820336326).

Almost surely, 2^139955438828 is an apocalyptic number.

It is an amenable number.

139955438828 is a deficient number, since it is larger than the sum of its proper divisors (104966579128).

139955438828 is a wasteful number, since it uses less digits than its factorization.

139955438828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34988859711 (or 34988859709 counting only the distinct ones).

The product of its digits is 74649600, while the sum is 65.

The spelling of 139955438828 in words is "one hundred thirty-nine billion, nine hundred fifty-five million, four hundred thirty-eight thousand, eight hundred twenty-eight".