130278001649 has 2 divisors, whose sum is σ = 130278001650. Its totient is φ = 130278001648.

The previous prime is 130278001577. The next prime is 130278001663. The reversal of 130278001649 is 946100872031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75552417424 + 54725584225 = 274868^2 + 233935^2 .

It is a cyclic number.

It is not a de Polignac number, because 130278001649 - 2⁸ = 130278001393 is a prime.

It is a super-3 number, since 3×130278001649³ (a number of 34 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (130278001949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65139000824 + 65139000825.

It is an arithmetic number, because the mean of its divisors is an integer number (65139000825).

Almost surely, 2^130278001649 is an apocalyptic number.

It is an amenable number.

130278001649 is a deficient number, since it is larger than the sum of its proper divisors (1).

130278001649 is an equidigital number, since it uses as much as digits as its factorization.

130278001649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 41.

The spelling of 130278001649 in words is "one hundred thirty billion, two hundred seventy-eight million, one thousand, six hundred forty-nine".