2118086556540 has 48 divisors (see below), whose sum is σ = 5931695024640. Its totient is φ = 564722827840.

The previous prime is 2118086556539. The next prime is 2118086556587. The reversal of 2118086556540 is 456556808112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2791776 + ... + 3468455.

It is an arithmetic number, because the mean of its divisors is an integer number (123576979680).

Almost surely, 2^{2118086556540} is an apocalyptic number.

2118086556540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2118086556540 is an abundant number, since it is smaller than the sum of its proper divisors (3813608468100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2118086556540 is a wasteful number, since it uses less digits than its factorization.

2118086556540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6265882 (or 6265880 counting only the distinct ones).

The product of its (nonzero) digits is 2304000, while the sum is 51.

The spelling of 2118086556540 in words is "two trillion, one hundred eighteen billion, eighty-six million, five hundred fifty-six thousand, five hundred forty".