66151525261066 has 16 divisors (see below), whose sum is σ = 114838090871040. Its totient is φ = 27991784648880.

The previous prime is 66151525261061. The next prime is 66151525261069. The reversal of 66151525261066 is 66016252515166.

It is not an unprimeable number, because it can be changed into a prime (66151525261061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29905751725 + ... + 29905753936.

It is an arithmetic number, because the mean of its divisors is an integer number (7177380679440).

Almost surely, 2^{66151525261066} is an apocalyptic number.

66151525261066 is a deficient number, since it is larger than the sum of its proper divisors (48686565609974).

66151525261066 is a wasteful number, since it uses less digits than its factorization.

66151525261066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59811505749.

The product of its (nonzero) digits is 3888000, while the sum is 52.

The spelling of 66151525261066 in words is "sixty-six trillion, one hundred fifty-one billion, five hundred twenty-five million, two hundred sixty-one thousand, sixty-six".