2197751789288 has 64 divisors (see below), whose sum is σ = 4552525667520. Its totient is φ = 994576207680.

The previous prime is 2197751789251. The next prime is 2197751789309. The reversal of 2197751789288 is 8829871577912.

It is a happy number.

It is a super-2 number, since 2×2197751789288² (a number of 25 digits) contains 22 as substring.

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, 1962470 + ... + 2871722.

It is an arithmetic number, because the mean of its divisors is an integer number (71133213555).

Almost surely, 2^{2197751789288} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2197751789288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2276262833760).

2197751789288 is an abundant number, since it is smaller than the sum of its proper divisors (2354773878232).

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

2197751789288 is a wasteful number, since it uses less digits than its factorization.

2197751789288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909519 (or 909493 counting only the distinct ones).

The product of its digits is 284497920, while the sum is 74.

The spelling of 2197751789288 in words is "two trillion, one hundred ninety-seven billion, seven hundred fifty-one million, seven hundred eighty-nine thousand, two hundred eighty-eight".