2106656218488 has 32 divisors (see below), whose sum is σ = 5266898150400. Its totient is φ = 702184392288.

The previous prime is 2106656218453. The next prime is 2106656218489. The reversal of 2106656218488 is 8848126566012.

It is a super-2 number, since 2×2106656218488² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2106656218489) 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, 1643398 + ... + 2629461.

It is an arithmetic number, because the mean of its divisors is an integer number (164590567200).

Almost surely, 2^{2106656218488} is an apocalyptic number.

It is an amenable number.

2106656218488 is an abundant number, since it is smaller than the sum of its proper divisors (3160241931912).

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

2106656218488 is a wasteful number, since it uses less digits than its factorization.

2106656218488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4293411 (or 4293407 counting only the distinct ones).

The product of its (nonzero) digits is 8847360, while the sum is 57.

The spelling of 2106656218488 in words is "two trillion, one hundred six billion, six hundred fifty-six million, two hundred eighteen thousand, four hundred eighty-eight".