130643620665 has 16 divisors (see below), whose sum is σ = 220031361600. Its totient is φ = 66009408192.

The previous prime is 130643620663. The next prime is 130643620697. The reversal of 130643620665 is 566026346031.

It is a happy number.

It is not a de Polignac number, because 130643620665 - 2¹ = 130643620663 is a prime.

It is not an unprimeable number, because it can be changed into a prime (130643620663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 229199050 + ... + 229199619.

It is an arithmetic number, because the mean of its divisors is an integer number (13751960100).

Almost surely, 2^130643620665 is an apocalyptic number.

130643620665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

130643620665 is a deficient number, since it is larger than the sum of its proper divisors (89387740935).

130643620665 is a wasteful number, since it uses less digits than its factorization.

130643620665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458398696.

The product of its (nonzero) digits is 466560, while the sum is 42.

Adding to 130643620665 its reverse (566026346031), we get a palindrome (696669966696).

The spelling of 130643620665 in words is "one hundred thirty billion, six hundred forty-three million, six hundred twenty thousand, six hundred sixty-five".