130687958666 has 12 divisors (see below), whose sum is σ = 206892434322. Its totient is φ = 61904822184.

The previous prime is 130687958663. The next prime is 130687958683. The reversal of 130687958666 is 666859786031.

It can be written as a sum of positive squares in only one way, i.e., 125362024225 + 5325934441 = 354065^2 + 72979^2 .

It is a super-2 number, since 2×130687958666² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (130687958663) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 90503405 + ... + 90504848.

Almost surely, 2^130687958666 is an apocalyptic number.

130687958666 is a deficient number, since it is larger than the sum of its proper divisors (76204475656).

130687958666 is a wasteful number, since it uses less digits than its factorization.

130687958666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181008293 (or 181008274 counting only the distinct ones).

The product of its (nonzero) digits is 78382080, while the sum is 65.

The spelling of 130687958666 in words is "one hundred thirty billion, six hundred eighty-seven million, nine hundred fifty-eight thousand, six hundred sixty-six".