66113502635536 has 20 divisors (see below), whose sum is σ = 128095122098412. Its totient is φ = 33056696932736.

The previous prime is 66113502635513. The next prime is 66113502635539. The reversal of 66113502635536 is 63553620531166.

66113502635536 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 50354635210000 + 15758867425536 = 7096100^2 + 3969744^2 .

It is a super-3 number, since 3×66113502635536³ (a number of 42 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (66113502635539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7735350 + ... + 13858666.

Almost surely, 2^{66113502635536} is an apocalyptic number.

It is an amenable number.

66113502635536 is a deficient number, since it is larger than the sum of its proper divisors (61981619462876).

66113502635536 is a wasteful number, since it uses less digits than its factorization.

66113502635536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6798138 (or 6798132 counting only the distinct ones).

The product of its (nonzero) digits is 8748000, while the sum is 52.

The spelling of 66113502635536 in words is "sixty-six trillion, one hundred thirteen billion, five hundred two million, six hundred thirty-five thousand, five hundred thirty-six".