66506130578383 has 8 divisors (see below), whose sum is σ = 66610250417952. Its totient is φ = 66402014839776.

The previous prime is 66506130578357. The next prime is 66506130578387. The reversal of 66506130578383 is 38387503160566.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66506130578383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66506130578387) 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, 32280541 + ... + 34278937.

It is an arithmetic number, because the mean of its divisors is an integer number (8326281302244).

Almost surely, 2^{66506130578383} is an apocalyptic number.

66506130578383 is a deficient number, since it is larger than the sum of its proper divisors (104119839569).

66506130578383 is a wasteful number, since it uses less digits than its factorization.

66506130578383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2050481.

The product of its (nonzero) digits is 65318400, while the sum is 61.

The spelling of 66506130578383 in words is "sixty-six trillion, five hundred six billion, one hundred thirty million, five hundred seventy-eight thousand, three hundred eighty-three".