2101818318216 has 64 divisors (see below), whose sum is σ = 5275138176000. Its totient is φ = 697861078848.

The previous prime is 2101818318143. The next prime is 2101818318251. The reversal of 2101818318216 is 6128138181012.

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, 81456085 + ... + 81481883.

It is an arithmetic number, because the mean of its divisors is an integer number (82424034000).

Almost surely, 2^{2101818318216} is an apocalyptic number.

It is an amenable number.

2101818318216 is an abundant number, since it is smaller than the sum of its proper divisors (3173319857784).

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

2101818318216 is a wasteful number, since it uses less digits than its factorization.

2101818318216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38978 (or 38974 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 42.

The spelling of 2101818318216 in words is "two trillion, one hundred one billion, eight hundred eighteen million, three hundred eighteen thousand, two hundred sixteen".