536757821618 has 18 divisors (see below), whose sum is σ = 811188406431. Its totient is φ = 266376635964.

The previous prime is 536757821617. The next prime is 536757821647. The reversal of 536757821618 is 816128757635.

It can be written as a sum of positive squares in only one way, i.e., 268378910809 + 268378910809 = 518053^2 + 518053^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=518053.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (536757821617) by changing a digit.

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 8 ways as a sum of consecutive naturals, for example, 144016871 + ... + 144020597.

Almost surely, 2^536757821618 is an apocalyptic number.

536757821618 is a deficient number, since it is larger than the sum of its proper divisors (274430584813).

536757821618 is an frugal number, since it uses more digits than its factorization.

536757821618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7734 (or 3868 counting only the distinct ones).

The product of its digits is 16934400, while the sum is 59.

The spelling of 536757821618 in words is "five hundred thirty-six billion, seven hundred fifty-seven million, eight hundred twenty-one thousand, six hundred eighteen".