66605610216151 has 6 divisors (see below), whose sum is σ = 70295671724352. Its totient is φ = 63100051783380.

The previous prime is 66605610216149. The next prime is 66605610216157. The reversal of 66605610216151 is 15161201650666.

It is not a de Polignac number, because 66605610216151 - 2¹ = 66605610216149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66605610216157) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 92251537335 + ... + 92251538056.

It is an arithmetic number, because the mean of its divisors is an integer number (11715945287392).

Almost surely, 2^{66605610216151} is an apocalyptic number.

66605610216151 is a deficient number, since it is larger than the sum of its proper divisors (3690061508201).

66605610216151 is a wasteful number, since it uses less digits than its factorization.

66605610216151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184503075429 (or 184503075410 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 46.

The spelling of 66605610216151 in words is "sixty-six trillion, six hundred five billion, six hundred ten million, two hundred sixteen thousand, one hundred fifty-one".