1065521745552 has 80 divisors (see below), whose sum is σ = 3009967260480. Its totient is φ = 322118361600.

The previous prime is 1065521745521. The next prime is 1065521745571. The reversal of 1065521745552 is 2555471255601.

It is a happy number.

It is a super-2 number, since 2×1065521745552² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2174427 + ... + 2619002.

It is an arithmetic number, because the mean of its divisors is an integer number (37624590756).

Almost surely, 2^{1065521745552} is an apocalyptic number.

1065521745552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1065521745552 is an abundant number, since it is smaller than the sum of its proper divisors (1944445514928).

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

1065521745552 is a wasteful number, since it uses less digits than its factorization.

1065521745552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4793872 (or 4793866 counting only the distinct ones).

The product of its (nonzero) digits is 2100000, while the sum is 48.

The spelling of 1065521745552 in words is "one trillion, sixty-five billion, five hundred twenty-one million, seven hundred forty-five thousand, five hundred fifty-two".