1065265356564 has 72 divisors (see below), whose sum is σ = 2810310939072. Its totient is φ = 339591732480.

The previous prime is 1065265356521. The next prime is 1065265356581. The reversal of 1065265356564 is 4656535625601.

1065265356564 is a `hidden beast` number, since 1 + 0 + 6 + 5 + 26 + 5 + 3 + 56 + 564 = 666.

It is a super-2 number, since 2×1065265356564² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1065265356564.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4870092 + ... + 5084124.

It is an arithmetic number, because the mean of its divisors is an integer number (39032096376).

Almost surely, 2^{1065265356564} is an apocalyptic number.

It is an amenable number.

1065265356564 is an abundant number, since it is smaller than the sum of its proper divisors (1745045582508).

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

1065265356564 is a wasteful number, since it uses less digits than its factorization.

1065265356564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220077 (or 220072 counting only the distinct ones).

The product of its (nonzero) digits is 19440000, while the sum is 54.

The spelling of 1065265356564 in words is "one trillion, sixty-five billion, two hundred sixty-five million, three hundred fifty-six thousand, five hundred sixty-four".