130615471666 has 4 divisors (see below), whose sum is σ = 195923207502. Its totient is φ = 65307735832.

The previous prime is 130615471643. The next prime is 130615471681. The reversal of 130615471666 is 666174516031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 76615472025 + 53999999641 = 276795^2 + 232379^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32653867915 + ... + 32653867918.

Almost surely, 2^130615471666 is an apocalyptic number.

130615471666 is a deficient number, since it is larger than the sum of its proper divisors (65307735836).

130615471666 is an equidigital number, since it uses as much as digits as its factorization.

130615471666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65307735835.

The product of its (nonzero) digits is 544320, while the sum is 46.

Adding to 130615471666 its reverse (666174516031), we get a palindrome (796789987697).

The spelling of 130615471666 in words is "one hundred thirty billion, six hundred fifteen million, four hundred seventy-one thousand, six hundred sixty-six".