66262660342251 has 16 divisors (see below), whose sum is σ = 88367052402720. Its totient is φ = 44166688093440.

The previous prime is 66262660342189. The next prime is 66262660342271. The reversal of 66262660342251 is 15224306626266.

It is not a de Polignac number, because 66262660342251 - 2⁴¹ = 64063637086699 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66262660342194 and 66262660342203.

It is not an unprimeable number, because it can be changed into a prime (66262660342271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 917056041 + ... + 917128293.

It is an arithmetic number, because the mean of its divisors is an integer number (5522940775170).

Almost surely, 2^{66262660342251} is an apocalyptic number.

66262660342251 is a deficient number, since it is larger than the sum of its proper divisors (22104392060469).

66262660342251 is a wasteful number, since it uses less digits than its factorization.

66262660342251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126286.

The product of its (nonzero) digits is 7464960, while the sum is 51.

The spelling of 66262660342251 in words is "sixty-six trillion, two hundred sixty-two billion, six hundred sixty million, three hundred forty-two thousand, two hundred fifty-one".