2118647372880 has 80 divisors (see below), whose sum is σ = 6577865239680. Its totient is φ = 564107395584.

The previous prime is 2118647372813. The next prime is 2118647372893. The reversal of 2118647372880 is 882737468112.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×2118647372880² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2118647372880.

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, 6602620 + ... + 6916059.

It is an arithmetic number, because the mean of its divisors is an integer number (82223315496).

Almost surely, 2^{2118647372880} is an apocalyptic number.

2118647372880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2118647372880 is an abundant number, since it is smaller than the sum of its proper divisors (4459217866800).

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

2118647372880 is a wasteful number, since it uses less digits than its factorization.

2118647372880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13519348 (or 13519342 counting only the distinct ones).

The product of its (nonzero) digits is 7225344, while the sum is 57.

The spelling of 2118647372880 in words is "two trillion, one hundred eighteen billion, six hundred forty-seven million, three hundred seventy-two thousand, eight hundred eighty".