1065150721503 has 24 divisors (see below), whose sum is σ = 1678774677840. Its totient is φ = 645409215360.

The previous prime is 1065150721493. The next prime is 1065150721507. The reversal of 1065150721503 is 3051270515601.

It is a happy number.

1065150721503 is a `hidden beast` number, since 10 + 65 + 15 + 0 + 72 + 1 + 503 = 666.

It is not a de Polignac number, because 1065150721503 - 2²² = 1065146527199 is a prime.

It is a super-2 number, since 2×1065150721503² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1065150721507) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 668038 + ... + 1605171.

It is an arithmetic number, because the mean of its divisors is an integer number (69948944910).

Almost surely, 2^{1065150721503} is an apocalyptic number.

1065150721503 is a deficient number, since it is larger than the sum of its proper divisors (613623956337).

1065150721503 is a wasteful number, since it uses less digits than its factorization.

1065150721503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2277959 (or 2277956 counting only the distinct ones).

The product of its (nonzero) digits is 31500, while the sum is 36.

The spelling of 1065150721503 in words is "one trillion, sixty-five billion, one hundred fifty million, seven hundred twenty-one thousand, five hundred three".