66527072551 has 2 divisors, whose sum is σ = 66527072552. Its totient is φ = 66527072550.

The previous prime is 66527072509. The next prime is 66527072561. The reversal of 66527072551 is 15527072566.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66527072551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66527072561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33263536275 + 33263536276.

It is an arithmetic number, because the mean of its divisors is an integer number (33263536276).

Almost surely, 2^66527072551 is an apocalyptic number.

66527072551 is a deficient number, since it is larger than the sum of its proper divisors (1).

66527072551 is an equidigital number, since it uses as much as digits as its factorization.

66527072551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 882000, while the sum is 46.

The spelling of 66527072551 in words is "sixty-six billion, five hundred twenty-seven million, seventy-two thousand, five hundred fifty-one".