1056601005565 has 32 divisors (see below), whose sum is σ = 1514820003840. Its totient is φ = 691758010944.

The previous prime is 1056601005529. The next prime is 1056601005569. The reversal of 1056601005565 is 5655001066501.

It is not a de Polignac number, because 1056601005565 - 2¹³ = 1056600997373 is a prime.

It is a super-2 number, since 2×1056601005565² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1056601005569) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 759435 + ... + 1640104.

It is an arithmetic number, because the mean of its divisors is an integer number (47338125120).

Almost surely, 2^{1056601005565} is an apocalyptic number.

It is an amenable number.

1056601005565 is a deficient number, since it is larger than the sum of its proper divisors (458218998275).

1056601005565 is a wasteful number, since it uses less digits than its factorization.

1056601005565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2400121.

The product of its (nonzero) digits is 135000, while the sum is 40.

The spelling of 1056601005565 in words is "one trillion, fifty-six billion, six hundred one million, five thousand, five hundred sixty-five".