1065173251540 has 48 divisors (see below), whose sum is σ = 2249094233232. Its totient is φ = 423741387776.

The previous prime is 1065173251531. The next prime is 1065173251607. The reversal of 1065173251540 is 451523715601.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1940050116 + 1063233201424 = 44046^2 + 1031132^2 .

It is a super-2 number, since 2×1065173251540² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1065173251493 and 1065173251502.

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 15 ways as a sum of consecutive naturals, for example, 10322682 + ... + 10425358.

It is an arithmetic number, because the mean of its divisors is an integer number (46856129859).

Almost surely, 2^{1065173251540} is an apocalyptic number.

1065173251540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1065173251540 is an abundant number, since it is smaller than the sum of its proper divisors (1183920981692).

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

1065173251540 is a wasteful number, since it uses less digits than its factorization.

1065173251540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105516 (or 105514 counting only the distinct ones).

The product of its (nonzero) digits is 126000, while the sum is 40.

The spelling of 1065173251540 in words is "one trillion, sixty-five billion, one hundred seventy-three million, two hundred fifty-one thousand, five hundred forty".