1065621611272 has 8 divisors (see below), whose sum is σ = 1998040521150. Its totient is φ = 532810805632.

The previous prime is 1065621611227. The next prime is 1065621611321. The reversal of 1065621611272 is 2721161265601.

It can be written as a sum of positive squares in only one way, i.e., 1048383496836 + 17238114436 = 1023906^2 + 131294^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×1065621611272³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66601350697 + ... + 66601350712.

Almost surely, 2^{1065621611272} is an apocalyptic number.

It is an amenable number.

1065621611272 is a deficient number, since it is larger than the sum of its proper divisors (932418909878).

1065621611272 is a wasteful number, since it uses less digits than its factorization.

1065621611272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133202701415 (or 133202701411 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 40.

Adding to 1065621611272 its reverse (2721161265601), we get a palindrome (3786782876873).

The spelling of 1065621611272 in words is "one trillion, sixty-five billion, six hundred twenty-one million, six hundred eleven thousand, two hundred seventy-two".