66162523154 has 16 divisors (see below), whose sum is σ = 122146196928. Its totient is φ = 26174184912.

The previous prime is 66162523151. The next prime is 66162523169. The reversal of 66162523154 is 45132526166.

It is a happy number.

It is a super-2 number, since 2×66162523154² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66162523151) 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, 181764992 + ... + 181765355.

It is an arithmetic number, because the mean of its divisors is an integer number (7634137308).

Almost surely, 2^66162523154 is an apocalyptic number.

66162523154 is a deficient number, since it is larger than the sum of its proper divisors (55983673774).

66162523154 is a wasteful number, since it uses less digits than its factorization.

66162523154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363530369.

The product of its digits is 259200, while the sum is 41.

The spelling of 66162523154 in words is "sixty-six billion, one hundred sixty-two million, five hundred twenty-three thousand, one hundred fifty-four".