130721601919 has 2 divisors, whose sum is σ = 130721601920. Its totient is φ = 130721601918.

The previous prime is 130721601893. The next prime is 130721601931. The reversal of 130721601919 is 919106127031.

It is a strong prime.

It is an emirp because it is prime and its reverse (919106127031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 130721601919 - 2³³ = 122131667327 is a prime.

It is a super-2 number, since 2×130721601919² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130721604919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65360800959 + 65360800960.

It is an arithmetic number, because the mean of its divisors is an integer number (65360800960).

Almost surely, 2^130721601919 is an apocalyptic number.

130721601919 is a deficient number, since it is larger than the sum of its proper divisors (1).

130721601919 is an equidigital number, since it uses as much as digits as its factorization.

130721601919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20412, while the sum is 40.

The spelling of 130721601919 in words is "one hundred thirty billion, seven hundred twenty-one million, six hundred one thousand, nine hundred nineteen".