1065561367520 has 48 divisors (see below), whose sum is σ = 2711034023040. Its totient is φ = 393438042624.

The previous prime is 1065561367459. The next prime is 1065561367561. The reversal of 1065561367520 is 257631655601.

It is a super-2 number, since 2×1065561367520² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256142480 + ... + 256146639.

It is an arithmetic number, because the mean of its divisors is an integer number (56479875480).

Almost surely, 2^{1065561367520} is an apocalyptic number.

1065561367520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1065561367520 is an abundant number, since it is smaller than the sum of its proper divisors (1645472655520).

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

1065561367520 is a wasteful number, since it uses less digits than its factorization.

1065561367520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512289147 (or 512289139 counting only the distinct ones).

The product of its (nonzero) digits is 1134000, while the sum is 47.

The spelling of 1065561367520 in words is "one trillion, sixty-five billion, five hundred sixty-one million, three hundred sixty-seven thousand, five hundred twenty".