138782579241 has 8 divisors (see below), whose sum is σ = 185058202144. Its totient is φ = 92514337920.

The previous prime is 138782579239. The next prime is 138782579269. The reversal of 138782579241 is 142975287831.

It is a happy number.

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

It is not a de Polignac number, because 138782579241 - 2¹ = 138782579239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138782579141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1801375 + ... + 1876836.

It is an arithmetic number, because the mean of its divisors is an integer number (23132275268).

Almost surely, 2^138782579241 is an apocalyptic number.

It is an amenable number.

138782579241 is a deficient number, since it is larger than the sum of its proper divisors (46275622903).

138782579241 is a wasteful number, since it uses less digits than its factorization.

138782579241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3690791.

The product of its digits is 6773760, while the sum is 57.

The spelling of 138782579241 in words is "one hundred thirty-eight billion, seven hundred eighty-two million, five hundred seventy-nine thousand, two hundred forty-one".