2197828263285 has 12 divisors (see below), whose sum is σ = 3809568989772. Its totient is φ = 1172175073728.

The previous prime is 2197828263283. The next prime is 2197828263329. The reversal of 2197828263285 is 5823628287912.

It is a happy number.

2197828263285 is a `hidden beast` number, since 2 + 1 + 9 + 78 + 28 + 263 + 285 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1328894811729 + 868933451556 = 1152777^2 + 932166^2 .

It is not a de Polignac number, because 2197828263285 - 2¹ = 2197828263283 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2197828263283) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24420313992 + ... + 24420314081.

It is an arithmetic number, because the mean of its divisors is an integer number (317464082481).

Almost surely, 2^{2197828263285} is an apocalyptic number.

It is an amenable number.

2197828263285 is a deficient number, since it is larger than the sum of its proper divisors (1611740726487).

2197828263285 is a wasteful number, since it uses less digits than its factorization.

2197828263285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48840628084 (or 48840628081 counting only the distinct ones).

The product of its digits is 46448640, while the sum is 63.

The spelling of 2197828263285 in words is "two trillion, one hundred ninety-seven billion, eight hundred twenty-eight million, two hundred sixty-three thousand, two hundred eighty-five".