2197866161072 has 20 divisors (see below), whose sum is σ = 4283864888016. Its totient is φ = 1092352641600.

The previous prime is 2197866161047. The next prime is 2197866161081. The reversal of 2197866161072 is 2701616687912.

It is a happy number.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 2197866160999 and 2197866161017.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 411274679 + ... + 411280022.

Almost surely, 2^{2197866161072} is an apocalyptic number.

It is an amenable number.

2197866161072 is a deficient number, since it is larger than the sum of its proper divisors (2085998726944).

2197866161072 is a wasteful number, since it uses less digits than its factorization.

2197866161072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822554876 (or 822554870 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 56.

The spelling of 2197866161072 in words is "two trillion, one hundred ninety-seven billion, eight hundred sixty-six million, one hundred sixty-one thousand, seventy-two".