1065165522681 has 64 divisors (see below), whose sum is σ = 1667222036480. Its totient is φ = 599031313920.

The previous prime is 1065165522677. The next prime is 1065165522703. The reversal of 1065165522681 is 1862255615601.

It is not a de Polignac number, because 1065165522681 - 2² = 1065165522677 is a prime.

It is a super-2 number, since 2×1065165522681² (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 1065165522681.

It is not an unprimeable number, because it can be changed into a prime (1065165522611) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7115850 + ... + 7263996.

It is an arithmetic number, because the mean of its divisors is an integer number (26050344320).

Almost surely, 2^{1065165522681} is an apocalyptic number.

It is an amenable number.

1065165522681 is a deficient number, since it is larger than the sum of its proper divisors (602056513799).

1065165522681 is a wasteful number, since it uses less digits than its factorization.

1065165522681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148526.

The product of its (nonzero) digits is 864000, while the sum is 48.

The spelling of 1065165522681 in words is "one trillion, sixty-five billion, one hundred sixty-five million, five hundred twenty-two thousand, six hundred eighty-one".