66130653322125 has 128 divisors (see below), whose sum is σ = 139824145244160. Its totient is φ = 30211895592000.

The previous prime is 66130653322061. The next prime is 66130653322127. The reversal of 66130653322125 is 52122335603166.

66130653322125 is a `hidden beast` number, since 6 + 6 + 1 + 306 + 5 + 3 + 322 + 12 + 5 = 666.

It is not a de Polignac number, because 66130653322125 - 2⁶ = 66130653322061 is a prime.

It is a super-2 number, since 2×66130653322125² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66130653322127) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 36223984 + ... + 38005766.

It is an arithmetic number, because the mean of its divisors is an integer number (1092376134720).

Almost surely, 2^{66130653322125} is an apocalyptic number.

It is an amenable number.

66130653322125 is an abundant number, since it is smaller than the sum of its proper divisors (73693491922035).

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

66130653322125 is a wasteful number, since it uses less digits than its factorization.

66130653322125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1783385 (or 1783369 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 45.

The spelling of 66130653322125 in words is "sixty-six trillion, one hundred thirty billion, six hundred fifty-three million, three hundred twenty-two thousand, one hundred twenty-five".