1301640643937 has 2 divisors, whose sum is σ = 1301640643938. Its totient is φ = 1301640643936.

The previous prime is 1301640643889. The next prime is 1301640643991. The reversal of 1301640643937 is 7393460461031.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1260592263121 + 41048380816 = 1122761^2 + 202604^2 .

It is a cyclic number.

It is not a de Polignac number, because 1301640643937 - 2⁶ = 1301640643873 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1301640643891 and 1301640643900.

It is not a weakly prime, because it can be changed into another prime (1301640643837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 650820321968 + 650820321969.

It is an arithmetic number, because the mean of its divisors is an integer number (650820321969).

Almost surely, 2^{1301640643937} is an apocalyptic number.

It is an amenable number.

1301640643937 is a deficient number, since it is larger than the sum of its proper divisors (1).

1301640643937 is an equidigital number, since it uses as much as digits as its factorization.

1301640643937 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 979776, while the sum is 47.

The spelling of 1301640643937 in words is "one trillion, three hundred one billion, six hundred forty million, six hundred forty-three thousand, nine hundred thirty-seven".