130721601943 has 2 divisors, whose sum is σ = 130721601944. Its totient is φ = 130721601942.

The previous prime is 130721601931. The next prime is 130721601961. The reversal of 130721601943 is 349106127031.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-130721601943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130721602943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65360800971 + 65360800972.

It is an arithmetic number, because the mean of its divisors is an integer number (65360800972).

Almost surely, 2^130721601943 is an apocalyptic number.

130721601943 is a deficient number, since it is larger than the sum of its proper divisors (1).

130721601943 is an equidigital number, since it uses as much as digits as its factorization.

130721601943 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 37.

Adding to 130721601943 its reverse (349106127031), we get a palindrome (479827728974).

The spelling of 130721601943 in words is "one hundred thirty billion, seven hundred twenty-one million, six hundred one thousand, nine hundred forty-three".