2169859733680 has 80 divisors (see below), whose sum is σ = 5209990253568. Its totient is φ = 839570400000.

The previous prime is 2169859733677. The next prime is 2169859733687. The reversal of 2169859733680 is 863379589612.

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

It is not an unprimeable number, because it can be changed into a prime (2169859733687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5388135 + ... + 5776825.

Almost surely, 2^{2169859733680} is an apocalyptic number.

2169859733680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2169859733680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2604995126784).

2169859733680 is an abundant number, since it is smaller than the sum of its proper divisors (3040130519888).

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

2169859733680 is a wasteful number, since it uses less digits than its factorization.

2169859733680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390986 (or 390980 counting only the distinct ones).

The product of its (nonzero) digits is 117573120, while the sum is 67.

The spelling of 2169859733680 in words is "two trillion, one hundred sixty-nine billion, eight hundred fifty-nine million, seven hundred thirty-three thousand, six hundred eighty".