66012040041301 has 4 divisors (see below), whose sum is σ = 67094204632204. Its totient is φ = 64929875450400.

The previous prime is 66012040041247. The next prime is 66012040041307. The reversal of 66012040041301 is 10314004021066.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2831782184100 + 63180257857201 = 1682790^2 + 7948601^2 .

It is a cyclic number.

It is not a de Polignac number, because 66012040041301 - 2⁴³ = 57215947019093 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66012040041301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66012040041307) 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 3 ways as a sum of consecutive naturals, for example, 541082295360 + ... + 541082295481.

It is an arithmetic number, because the mean of its divisors is an integer number (16773551158051).

Almost surely, 2^{66012040041301} is an apocalyptic number.

66012040041301 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

66012040041301 is a deficient number, since it is larger than the sum of its proper divisors (1082164590903).

66012040041301 is a wasteful number, since it uses less digits than its factorization.

66012040041301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1082164590902.

The product of its (nonzero) digits is 3456, while the sum is 28.

Adding to 66012040041301 its reverse (10314004021066), we get a palindrome (76326044062367).

The spelling of 66012040041301 in words is "sixty-six trillion, twelve billion, forty million, forty-one thousand, three hundred one".