66157615550122 has 8 divisors (see below), whose sum is σ = 99237211150176. Its totient is φ = 33078545166732.

The previous prime is 66157615550107. The next prime is 66157615550123. The reversal of 66157615550122 is 22105551675166.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 66157615550122.

It is not an unprimeable number, because it can be changed into a prime (66157615550123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130989108 + ... + 131493199.

It is an arithmetic number, because the mean of its divisors is an integer number (12404651393772).

Almost surely, 2^{66157615550122} is an apocalyptic number.

66157615550122 is a deficient number, since it is larger than the sum of its proper divisors (33079595600054).

66157615550122 is a wasteful number, since it uses less digits than its factorization.

66157615550122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262608332.

The product of its (nonzero) digits is 3780000, while the sum is 52.

The spelling of 66157615550122 in words is "sixty-six trillion, one hundred fifty-seven billion, six hundred fifteen million, five hundred fifty thousand, one hundred twenty-two".