265140130540066 has 4 divisors (see below), whose sum is σ = 397710195810102. Its totient is φ = 132570065270032.

The previous prime is 265140130540057. The next prime is 265140130540091. The reversal of 265140130540066 is 660045031041562.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 178012299515625 + 87127831024441 = 13342125^2 + 9334229^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66285032635015 + ... + 66285032635018.

Almost surely, 2^{265140130540066} is an apocalyptic number.

265140130540066 is a deficient number, since it is larger than the sum of its proper divisors (132570065270036).

265140130540066 is a wasteful number, since it uses less digits than its factorization.

265140130540066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132570065270035.

The product of its (nonzero) digits is 518400, while the sum is 43.

The spelling of 265140130540066 in words is "two hundred sixty-five trillion, one hundred forty billion, one hundred thirty million, five hundred forty thousand, sixty-six".