2156181160700 has 144 divisors (see below), whose sum is σ = 5364697262400. Its totient is φ = 736864972800.

The previous prime is 2156181160699. The next prime is 2156181160709. The reversal of 2156181160700 is 70611816512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156181160709) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 313896866 + ... + 313903734.

It is an arithmetic number, because the mean of its divisors is an integer number (37254842100).

Almost surely, 2^{2156181160700} is an apocalyptic number.

2156181160700 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 2156181160700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2682348631200).

2156181160700 is an abundant number, since it is smaller than the sum of its proper divisors (3208516101700).

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

2156181160700 is a wasteful number, since it uses less digits than its factorization.

2156181160700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8280 (or 8273 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 38.

The spelling of 2156181160700 in words is "two trillion, one hundred fifty-six billion, one hundred eighty-one million, one hundred sixty thousand, seven hundred".