2118306857568 has 96 divisors (see below), whose sum is σ = 6207131855232. Its totient is φ = 626982988800.

The previous prime is 2118306857549. The next prime is 2118306857573. The reversal of 2118306857568 is 8657586038112.

It is a tau number, because it is divible by the number of its divisors (96).

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, 23279853 + ... + 23370668.

It is an arithmetic number, because the mean of its divisors is an integer number (64657623492).

Almost surely, 2^{2118306857568} is an apocalyptic number.

It is an amenable number.

2118306857568 is an abundant number, since it is smaller than the sum of its proper divisors (4088824997664).

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

2118306857568 is a wasteful number, since it uses less digits than its factorization.

2118306857568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46650588 (or 46650580 counting only the distinct ones).

The product of its (nonzero) digits is 19353600, while the sum is 60.

The spelling of 2118306857568 in words is "two trillion, one hundred eighteen billion, three hundred six million, eight hundred fifty-seven thousand, five hundred sixty-eight".