66400062113 has 48 divisors (see below), whose sum is σ = 86566496256. Its totient is φ = 49456804320.

The previous prime is 66400062103. The next prime is 66400062121. The reversal of 66400062113 is 31126000466.

It is a happy number.

It is not a de Polignac number, because 66400062113 - 2⁶ = 66400062049 is a prime.

It is a super-2 number, since 2×66400062113² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66400062103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6686570 + ... + 6696492.

It is an arithmetic number, because the mean of its divisors is an integer number (1803468672).

Almost surely, 2^66400062113 is an apocalyptic number.

It is an amenable number.

66400062113 is a deficient number, since it is larger than the sum of its proper divisors (20166434143).

66400062113 is a wasteful number, since it uses less digits than its factorization.

66400062113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10074 (or 10031 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

Adding to 66400062113 its reverse (31126000466), we get a palindrome (97526062579).

The spelling of 66400062113 in words is "sixty-six billion, four hundred million, sixty-two thousand, one hundred thirteen".