66540150101120 has 64 divisors (see below), whose sum is σ = 159142104950400. Its totient is φ = 26604421475328.

The previous prime is 66540150101057. The next prime is 66540150101141. The reversal of 66540150101120 is 2110105104566.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (32).

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, 21266750 + ... + 24194109.

It is an arithmetic number, because the mean of its divisors is an integer number (2486595389850).

Almost surely, 2^{66540150101120} is an apocalyptic number.

It is an amenable number.

66540150101120 is an abundant number, since it is smaller than the sum of its proper divisors (92601954849280).

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

66540150101120 is a wasteful number, since it uses less digits than its factorization.

66540150101120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45463165 (or 45463153 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 32.

Adding to 66540150101120 its reverse (2110105104566), we get a palindrome (68650255205686).

The spelling of 66540150101120 in words is "sixty-six trillion, five hundred forty billion, one hundred fifty million, one hundred one thousand, one hundred twenty".