651017981413 has 2 divisors, whose sum is σ = 651017981414. Its totient is φ = 651017981412.

The previous prime is 651017981297. The next prime is 651017981417. The reversal of 651017981413 is 314189710156.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 631018930689 + 19999050724 = 794367^2 + 141418^2 .

It is a cyclic number.

It is not a de Polignac number, because 651017981413 - 2²¹ = 651015884261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (651017981417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325508990706 + 325508990707.

It is an arithmetic number, because the mean of its divisors is an integer number (325508990707).

Almost surely, 2^651017981413 is an apocalyptic number.

It is an amenable number.

651017981413 is a deficient number, since it is larger than the sum of its proper divisors (1).

651017981413 is an equidigital number, since it uses as much as digits as its factorization.

651017981413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 46.

The spelling of 651017981413 in words is "six hundred fifty-one billion, seventeen million, nine hundred eighty-one thousand, four hundred thirteen".