2565632043061 has 8 divisors (see below), whose sum is σ = 2569196509880. Its totient is φ = 2562070053312.

The previous prime is 2565632043041. The next prime is 2565632043083. The reversal of 2565632043061 is 1603402365652.

It can be written as a sum of positive squares in 4 ways, for example, as 1098893054961 + 1466738988100 = 1048281^2 + 1211090^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2565632043061 - 2³³ = 2557042108469 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2565632042999 and 2565632043017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2565632043011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1458511 + ... + 2694163.

It is an arithmetic number, because the mean of its divisors is an integer number (321149563735).

Almost surely, 2^{2565632043061} is an apocalyptic number.

It is an amenable number.

2565632043061 is a deficient number, since it is larger than the sum of its proper divisors (3564466819).

2565632043061 is a wasteful number, since it uses less digits than its factorization.

2565632043061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1238535.

The product of its (nonzero) digits is 777600, while the sum is 43.

The spelling of 2565632043061 in words is "two trillion, five hundred sixty-five billion, six hundred thirty-two million, forty-three thousand, sixty-one".