138926040747 has 8 divisors (see below), whose sum is σ = 199483545744. Its totient is φ = 85492948128.

The previous prime is 138926040733. The next prime is 138926040749. The reversal of 138926040747 is 747040629831.

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

It is not a de Polignac number, because 138926040747 - 2⁷ = 138926040619 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 138926040747.

It is not an unprimeable number, because it can be changed into a prime (138926040749) 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, 1781103048 + ... + 1781103125.

It is an arithmetic number, because the mean of its divisors is an integer number (24935443218).

Almost surely, 2^138926040747 is an apocalyptic number.

138926040747 is a deficient number, since it is larger than the sum of its proper divisors (60557504997).

138926040747 is a wasteful number, since it uses less digits than its factorization.

138926040747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3562206189.

The product of its (nonzero) digits is 2032128, while the sum is 51.

The spelling of 138926040747 in words is "one hundred thirty-eight billion, nine hundred twenty-six million, forty thousand, seven hundred forty-seven".