2118556986807 has 8 divisors (see below), whose sum is σ = 2824749483376. Its totient is φ = 1412367907392.

The previous prime is 2118556986803. The next prime is 2118556986811. The reversal of 2118556986807 is 7086896558112.

It is an interprime number because it is at equal distance from previous prime (2118556986803) and next prime (2118556986811).

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

It is not a de Polignac number, because 2118556986807 - 2² = 2118556986803 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 (2118556986803) 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, 1597803 + ... + 2605779.

It is an arithmetic number, because the mean of its divisors is an integer number (353093685422).

Almost surely, 2^{2118556986807} is an apocalyptic number.

2118556986807 is a deficient number, since it is larger than the sum of its proper divisors (706192496569).

2118556986807 is a wasteful number, since it uses less digits than its factorization.

2118556986807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1708577.

The product of its (nonzero) digits is 58060800, while the sum is 66.

The spelling of 2118556986807 in words is "two trillion, one hundred eighteen billion, five hundred fifty-six million, nine hundred eighty-six thousand, eight hundred seven".