66386733768348 has 96 divisors (see below), whose sum is σ = 178192438534656. Its totient is φ = 18843597007872.

The previous prime is 66386733768347. The next prime is 66386733768373. The reversal of 66386733768348 is 84386733768366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66386733768347) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4842040 + ... + 12498752.

It is an arithmetic number, because the mean of its divisors is an integer number (1856171234736).

Almost surely, 2^{66386733768348} is an apocalyptic number.

It is an amenable number.

66386733768348 is an abundant number, since it is smaller than the sum of its proper divisors (111805704766308).

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

66386733768348 is a wasteful number, since it uses less digits than its factorization.

66386733768348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7657403 (or 7657401 counting only the distinct ones).

The product of its digits is 10534551552, while the sum is 78.

The spelling of 66386733768348 in words is "sixty-six trillion, three hundred eighty-six billion, seven hundred thirty-three million, seven hundred sixty-eight thousand, three hundred forty-eight".