2197828478502 has 12 divisors (see below), whose sum is σ = 4761961703460. Its totient is φ = 732609492828.

The previous prime is 2197828478467. The next prime is 2197828478519. The reversal of 2197828478502 is 2058748287912.

2197828478502 is a `hidden beast` number, since 2 + 1 + 9 + 7 + 82 + 8 + 47 + 8 + 502 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 2197828478502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 61050791052 + ... + 61050791087.

It is an arithmetic number, because the mean of its divisors is an integer number (396830141955).

Almost surely, 2^{2197828478502} is an apocalyptic number.

2197828478502 is an abundant number, since it is smaller than the sum of its proper divisors (2564133224958).

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

2197828478502 is a wasteful number, since it uses less digits than its factorization.

2197828478502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122101582147 (or 122101582144 counting only the distinct ones).

The product of its (nonzero) digits is 36126720, while the sum is 63.

The spelling of 2197828478502 in words is "two trillion, one hundred ninety-seven billion, eight hundred twenty-eight million, four hundred seventy-eight thousand, five hundred two".