7138118681354 has 4 divisors (see below), whose sum is σ = 10707178022034. Its totient is φ = 3569059340676.

The previous prime is 7138118681329. The next prime is 7138118681359. The reversal of 7138118681354 is 4531868118317.

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

It can be written as a sum of positive squares in only one way, i.e., 4373138352025 + 2764980329329 = 2091205^2 + 1662823^2 .

It is a super-3 number, since 3×7138118681354³ (a number of 40 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7138118681354.

It is not an unprimeable number, because it can be changed into a prime (7138118681359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1784529670337 + ... + 1784529670340.

Almost surely, 2^{7138118681354} is an apocalyptic number.

7138118681354 is a deficient number, since it is larger than the sum of its proper divisors (3569059340680).

7138118681354 is a wasteful number, since it uses less digits than its factorization.

7138118681354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3569059340679.

The product of its digits is 3870720, while the sum is 56.

The spelling of 7138118681354 in words is "seven trillion, one hundred thirty-eight billion, one hundred eighteen million, six hundred eighty-one thousand, three hundred fifty-four".