666715137361322 has 32 divisors (see below), whose sum is σ = 1203148293513600. Its totient is φ = 270684377080128.

The previous prime is 666715137361313. The next prime is 666715137361327. The reversal of 666715137361322 is 223163731517666.

It is not an unprimeable number, because it can be changed into a prime (666715137361327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49514297 + ... + 61523132.

It is an arithmetic number, because the mean of its divisors is an integer number (37598384172300).

Almost surely, 2^{666715137361322} is an apocalyptic number.

666715137361322 is a deficient number, since it is larger than the sum of its proper divisors (536433156152278).

666715137361322 is a wasteful number, since it uses less digits than its factorization.

666715137361322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111060030.

The product of its digits is 34292160, while the sum is 59.

Adding to 666715137361322 its reverse (223163731517666), we get a palindrome (889878868878988).

The spelling of 666715137361322 in words is "six hundred sixty-six trillion, seven hundred fifteen billion, one hundred thirty-seven million, three hundred sixty-one thousand, three hundred twenty-two".