2197540800000 has 2880 divisors, whose sum is σ = 10295836024320. Its totient is φ = 452874240000.

The previous prime is 2197540799989. The next prime is 2197540800031. The reversal of 2197540800000 is 80457912.

2197540800000 is a `hidden beast` number, since 21 + 97 + 540 + 8 + 0 + 0 + 0 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (2880).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 51105599979 + ... + 51105600021.

It is an arithmetic number, because the mean of its divisors is an integer number (3574943064).

Almost surely, 2^{2197540800000} is an apocalyptic number.

2197540800000 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 2197540800000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5147918012160).

2197540800000 is an abundant number, since it is smaller than the sum of its proper divisors (8098295224320).

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

2197540800000 is an frugal number, since it uses more digits than its factorization.

2197540800000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128 (or 73 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

It can be divided in two parts, 2197 and 540800000, that multiplied together give a 5-th power (1188137600000 = 260⁵).

The spelling of 2197540800000 in words is "two trillion, one hundred ninety-seven billion, five hundred forty million, eight hundred thousand".