66911007522 has 16 divisors (see below), whose sum is σ = 133824573792. Its totient is φ = 22303242720.

The previous prime is 66911007521. The next prime is 66911007539. The reversal of 66911007522 is 22570011966.

66911007522 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (66911007521) 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, 491133 + ... + 612399.

It is an arithmetic number, because the mean of its divisors is an integer number (8364035862).

Almost surely, 2^66911007522 is an apocalyptic number.

66911007522 is an abundant number, since it is smaller than the sum of its proper divisors (66913566270).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66911007522 is a wasteful number, since it uses less digits than its factorization.

66911007522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213233.

The product of its (nonzero) digits is 45360, while the sum is 39.

The spelling of 66911007522 in words is "sixty-six billion, nine hundred eleven million, seven thousand, five hundred twenty-two".