511116560655 has 32 divisors (see below), whose sum is σ = 828024548544. Its totient is φ = 269203439616.

The previous prime is 511116560653. The next prime is 511116560711. The reversal of 511116560655 is 556065611115.

It is not a de Polignac number, because 511116560655 - 2¹ = 511116560653 is a prime.

It is a super-2 number, since 2×511116560655² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (511116560651) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 247734 + ... + 1040963.

It is an arithmetic number, because the mean of its divisors is an integer number (25875767142).

Almost surely, 2^511116560655 is an apocalyptic number.

511116560655 is a deficient number, since it is larger than the sum of its proper divisors (316907987889).

511116560655 is a wasteful number, since it uses less digits than its factorization.

511116560655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1289035.

The product of its (nonzero) digits is 135000, while the sum is 42.

The spelling of 511116560655 in words is "five hundred eleven billion, one hundred sixteen million, five hundred sixty thousand, six hundred fifty-five".