66406115262 has 16 divisors (see below), whose sum is σ = 139802348160. Its totient is φ = 20970352152.

The previous prime is 66406115257. The next prime is 66406115351. The reversal of 66406115262 is 26251160466.

It is a self number, because there is not a number n which added to its sum of digits gives 66406115262.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 291254778 + ... + 291255005.

It is an arithmetic number, because the mean of its divisors is an integer number (8737646760).

Almost surely, 2^66406115262 is an apocalyptic number.

66406115262 is an abundant number, since it is smaller than the sum of its proper divisors (73396232898).

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

66406115262 is a wasteful number, since it uses less digits than its factorization.

66406115262 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582509807.

The product of its (nonzero) digits is 103680, while the sum is 39.

The spelling of 66406115262 in words is "sixty-six billion, four hundred six million, one hundred fifteen thousand, two hundred sixty-two".