66660601103250 has 128 divisors (see below), whose sum is σ = 207440865036288. Its totient is φ = 13851553464000.

The previous prime is 66660601103233. The next prime is 66660601103281. The reversal of 66660601103250 is 5230110606666.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 577090312 + ... + 577205811.

It is an arithmetic number, because the mean of its divisors is an integer number (1620631758096).

Almost surely, 2^{66660601103250} is an apocalyptic number.

66660601103250 is an abundant number, since it is smaller than the sum of its proper divisors (140780263933038).

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

66660601103250 is a wasteful number, since it uses less digits than its factorization.

66660601103250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1154296161 (or 1154296151 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 42.

The spelling of 66660601103250 in words is "sixty-six trillion, six hundred sixty billion, six hundred one million, one hundred three thousand, two hundred fifty".