66285075060551 has 2 divisors, whose sum is σ = 66285075060552. Its totient is φ = 66285075060550.

The previous prime is 66285075060541. The next prime is 66285075060569. The reversal of 66285075060551 is 15506057058266.

It is a happy number.

66285075060551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66285075060551 is a prime.

It is a super-2 number, since 2×66285075060551² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66285075060541) 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 as a sum of consecutive naturals, namely, 33142537530275 + 33142537530276.

It is an arithmetic number, because the mean of its divisors is an integer number (33142537530276).

Almost surely, 2^{66285075060551} is an apocalyptic number.

66285075060551 is a deficient number, since it is larger than the sum of its proper divisors (1).

66285075060551 is an equidigital number, since it uses as much as digits as its factorization.

66285075060551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120000, while the sum is 56.

The spelling of 66285075060551 in words is "sixty-six trillion, two hundred eighty-five billion, seventy-five million, sixty thousand, five hundred fifty-one".