138779431753 has 8 divisors (see below), whose sum is σ = 143260772096. Its totient is φ = 134298378000.

The previous prime is 138779431741. The next prime is 138779431759. The reversal of 138779431753 is 357134977831.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138779431753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138779431759) 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 7 ways as a sum of consecutive naturals, for example, 1378975 + ... + 1476187.

It is an arithmetic number, because the mean of its divisors is an integer number (17907596512).

Almost surely, 2^138779431753 is an apocalyptic number.

It is an amenable number.

138779431753 is a deficient number, since it is larger than the sum of its proper divisors (4481340343).

138779431753 is an equidigital number, since it uses as much as digits as its factorization.

138779431753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143295.

The product of its digits is 13335840, while the sum is 58.

The spelling of 138779431753 in words is "one hundred thirty-eight billion, seven hundred seventy-nine million, four hundred thirty-one thousand, seven hundred fifty-three".