66369105075 has 48 divisors (see below), whose sum is σ = 135052633856. Its totient is φ = 28006300800.

The previous prime is 66369105073. The next prime is 66369105113. The reversal of 66369105075 is 57050196366.

It is not a de Polignac number, because 66369105075 - 2¹ = 66369105073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66369105073) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4855381 + ... + 4869030.

Almost surely, 2^66369105075 is an apocalyptic number.

66369105075 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

66369105075 is an abundant number, since it is smaller than the sum of its proper divisors (68683528781).

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

66369105075 is a wasteful number, since it uses less digits than its factorization.

66369105075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9724444 (or 9724439 counting only the distinct ones).

The product of its (nonzero) digits is 1020600, while the sum is 48.

The spelling of 66369105075 in words is "sixty-six billion, three hundred sixty-nine million, one hundred five thousand, seventy-five".