1071065745081 has 6 divisors (see below), whose sum is σ = 1547094965130. Its totient is φ = 714043830048.

The previous prime is 1071065745017. The next prime is 1071065745109. The reversal of 1071065745081 is 1805475601701.

1071065745081 is a `hidden beast` number, since 1 + 0 + 7 + 10 + 65 + 74 + 508 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1068494342400 + 2571402681 = 1033680^2 + 50709^2 .

It is not a de Polignac number, because 1071065745081 - 2⁶ = 1071065745017 is a prime.

It is a super-2 number, since 2×1071065745081² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1071065745011) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 59503652496 + ... + 59503652513.

It is an arithmetic number, because the mean of its divisors is an integer number (257849160855).

Almost surely, 2^{1071065745081} is an apocalyptic number.

It is an amenable number.

1071065745081 is a deficient number, since it is larger than the sum of its proper divisors (476029220049).

1071065745081 is a wasteful number, since it uses less digits than its factorization.

1071065745081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119007305015 (or 119007305012 counting only the distinct ones).

The product of its (nonzero) digits is 235200, while the sum is 45.

The spelling of 1071065745081 in words is "one trillion, seventy-one billion, sixty-five million, seven hundred forty-five thousand, eighty-one".