66632402087 has 2 divisors, whose sum is σ = 66632402088. Its totient is φ = 66632402086.

The previous prime is 66632402029. The next prime is 66632402107. The reversal of 66632402087 is 78020423666.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66632402087 - 2²² = 66628207783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66632402387) 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 as a sum of consecutive naturals, namely, 33316201043 + 33316201044.

It is an arithmetic number, because the mean of its divisors is an integer number (33316201044).

Almost surely, 2^66632402087 is an apocalyptic number.

66632402087 is a deficient number, since it is larger than the sum of its proper divisors (1).

66632402087 is an equidigital number, since it uses as much as digits as its factorization.

66632402087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 580608, while the sum is 44.

The spelling of 66632402087 in words is "sixty-six billion, six hundred thirty-two million, four hundred two thousand, eighty-seven".