66156005107 has 2 divisors, whose sum is σ = 66156005108. Its totient is φ = 66156005106.

The previous prime is 66156005101. The next prime is 66156005117. The reversal of 66156005107 is 70150065166.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66156005107 - 2¹¹ = 66156003059 is a prime.

It is not a weakly prime, because it can be changed into another prime (66156005101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33078002553 + 33078002554.

It is an arithmetic number, because the mean of its divisors is an integer number (33078002554).

Almost surely, 2^66156005107 is an apocalyptic number.

66156005107 is a deficient number, since it is larger than the sum of its proper divisors (1).

66156005107 is an equidigital number, since it uses as much as digits as its factorization.

66156005107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37800, while the sum is 37.

The spelling of 66156005107 in words is "sixty-six billion, one hundred fifty-six million, five thousand, one hundred seven".