7138118652181 has 16 divisors (see below), whose sum is σ = 8055684417600. Its totient is φ = 6265334275200.

The previous prime is 7138118652169. The next prime is 7138118652251. The reversal of 7138118652181 is 1812568118317.

It is a happy number.

It is not a de Polignac number, because 7138118652181 - 2²⁵ = 7138085097749 is a prime.

It is a super-2 number, since 2×7138118652181² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7138118655181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26191825 + ... + 26462953.

It is an arithmetic number, because the mean of its divisors is an integer number (503480276100).

Almost surely, 2^{7138118652181} is an apocalyptic number.

It is an amenable number.

7138118652181 is a deficient number, since it is larger than the sum of its proper divisors (917565765419).

7138118652181 is a wasteful number, since it uses less digits than its factorization.

7138118652181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353700.

The product of its digits is 645120, while the sum is 52.

The spelling of 7138118652181 in words is "seven trillion, one hundred thirty-eight billion, one hundred eighteen million, six hundred fifty-two thousand, one hundred eighty-one".