66540150101121 has 8 divisors (see below), whose sum is σ = 88720238072544. Its totient is φ = 44360081098560.

The previous prime is 66540150101057. The next prime is 66540150101141. The reversal of 66540150101121 is 12110105104566.

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

It is not a de Polignac number, because 66540150101121 - 2⁶ = 66540150101057 is a prime.

It is a super-3 number, since 3×66540150101121³ (a number of 42 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (66540150101141) 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, 9911401 + ... + 15209081.

It is an arithmetic number, because the mean of its divisors is an integer number (11090029759068).

Almost surely, 2^{66540150101121} is an apocalyptic number.

It is an amenable number.

66540150101121 is a deficient number, since it is larger than the sum of its proper divisors (22180087971423).

66540150101121 is a wasteful number, since it uses less digits than its factorization.

66540150101121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9484431.

The product of its (nonzero) digits is 7200, while the sum is 33.

Adding to 66540150101121 its reverse (12110105104566), we get a palindrome (78650255205687).

The spelling of 66540150101121 in words is "sixty-six trillion, five hundred forty billion, one hundred fifty million, one hundred one thousand, one hundred twenty-one".