2190453565656 has 16 divisors (see below), whose sum is σ = 5476133914200. Its totient is φ = 730151188544.

The previous prime is 2190453565589. The next prime is 2190453565669. The reversal of 2190453565656 is 6565653540912.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2190453565596 and 2190453565605.

It is a congruent number.

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, 45634449261 + ... + 45634449308.

Almost surely, 2^{2190453565656} is an apocalyptic number.

It is an amenable number.

2190453565656 is an abundant number, since it is smaller than the sum of its proper divisors (3285680348544).

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

2190453565656 is a wasteful number, since it uses less digits than its factorization.

2190453565656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91268898578 (or 91268898574 counting only the distinct ones).

The product of its (nonzero) digits is 29160000, while the sum is 57.

The spelling of 2190453565656 in words is "two trillion, one hundred ninety billion, four hundred fifty-three million, five hundred sixty-five thousand, six hundred fifty-six".