2605565472956 has 12 divisors (see below), whose sum is σ = 4562818412880. Its totient is φ = 1301903069280.

The previous prime is 2605565472919. The next prime is 2605565472959. The reversal of 2605565472956 is 6592745655062.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2605565472959) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219910136 + ... + 219921983.

It is an arithmetic number, because the mean of its divisors is an integer number (380234867740).

Almost surely, 2^{2605565472956} is an apocalyptic number.

It is an amenable number.

2605565472956 is a deficient number, since it is larger than the sum of its proper divisors (1957252939924).

2605565472956 is a wasteful number, since it uses less digits than its factorization.

2605565472956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439833604 (or 439833602 counting only the distinct ones).

The product of its (nonzero) digits is 136080000, while the sum is 62.

The spelling of 2605565472956 in words is "two trillion, six hundred five billion, five hundred sixty-five million, four hundred seventy-two thousand, nine hundred fifty-six".