2118542125139 has 8 divisors (see below), whose sum is σ = 2319361553520. Its totient is φ = 1919093478400.

The previous prime is 2118542125103. The next prime is 2118542125181. The reversal of 2118542125139 is 9315212458112.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2118542125139 - 2⁴⁰ = 1019030497363 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2118542125139.

It is not an unprimeable number, because it can be changed into a prime (2118542122139) 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, 342692174 + ... + 342698355.

It is an arithmetic number, because the mean of its divisors is an integer number (289920194190).

Almost surely, 2^{2118542125139} is an apocalyptic number.

2118542125139 is a deficient number, since it is larger than the sum of its proper divisors (200819428381).

2118542125139 is a wasteful number, since it uses less digits than its factorization.

2118542125139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685390821.

The product of its digits is 172800, while the sum is 44.

The spelling of 2118542125139 in words is "two trillion, one hundred eighteen billion, five hundred forty-two million, one hundred twenty-five thousand, one hundred thirty-nine".