511041040065 has 48 divisors (see below), whose sum is σ = 927329090688. Its totient is φ = 259855630848.

The previous prime is 511041040061. The next prime is 511041040073. The reversal of 511041040065 is 560040140115.

It is not a de Polignac number, because 511041040065 - 2² = 511041040061 is a prime.

It is a super-2 number, since 2×511041040065² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (511041040061) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 486424 + ... + 1121913.

It is an arithmetic number, because the mean of its divisors is an integer number (19319356056).

Almost surely, 2^511041040065 is an apocalyptic number.

It is an amenable number.

511041040065 is a deficient number, since it is larger than the sum of its proper divisors (416288050623).

511041040065 is a wasteful number, since it uses less digits than its factorization.

511041040065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1608678 (or 1608675 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The spelling of 511041040065 in words is "five hundred eleven billion, forty-one million, forty thousand, sixty-five".