138130795571999 has 4 divisors (see below), whose sum is σ = 141499839366480. Its totient is φ = 134761751777520.

The previous prime is 138130795571987. The next prime is 138130795572079. The reversal of 138130795571999 is 999175597031831.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 138130795571999 - 2²⁴ = 138130778794783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138130795576999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1684521897179 + ... + 1684521897260.

It is an arithmetic number, because the mean of its divisors is an integer number (35374959841620).

Almost surely, 2^{138130795571999} is an apocalyptic number.

138130795571999 is a deficient number, since it is larger than the sum of its proper divisors (3369043794481).

138130795571999 is an equidigital number, since it uses as much as digits as its factorization.

138130795571999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3369043794480.

The product of its (nonzero) digits is 578680200, while the sum is 77.

The spelling of 138130795571999 in words is "one hundred thirty-eight trillion, one hundred thirty billion, seven hundred ninety-five million, five hundred seventy-one thousand, nine hundred ninety-nine".