130644642642 has 48 divisors (see below), whose sum is σ = 275960183520. Its totient is φ = 41225285376.

The previous prime is 130644642631. The next prime is 130644642649. The reversal of 130644642642 is 246246446031.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 130644642594 and 130644642603.

It is not an unprimeable number, because it can be changed into a prime (130644642649) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 95709 + ... + 520047.

It is an arithmetic number, because the mean of its divisors is an integer number (5749170490).

Almost surely, 2^130644642642 is an apocalyptic number.

130644642642 is an abundant number, since it is smaller than the sum of its proper divisors (145315540878).

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

130644642642 is a wasteful number, since it uses less digits than its factorization.

130644642642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424487 (or 424464 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 42.

The spelling of 130644642642 in words is "one hundred thirty billion, six hundred forty-four million, six hundred forty-two thousand, six hundred forty-two".