351980999989 has 2 divisors, whose sum is σ = 351980999990. Its totient is φ = 351980999988.

The previous prime is 351980999977. The next prime is 351981000013. The reversal of 351980999989 is 989999089153.

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., 189261541764 + 162719458225 = 435042^2 + 403385^2 .

It is a cyclic number.

It is not a de Polignac number, because 351980999989 - 2¹⁹ = 351980475701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (351980999089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 175990499994 + 175990499995.

It is an arithmetic number, because the mean of its divisors is an integer number (175990499995).

Almost surely, 2^351980999989 is an apocalyptic number.

It is an amenable number.

351980999989 is a deficient number, since it is larger than the sum of its proper divisors (1).

351980999989 is an equidigital number, since it uses as much as digits as its factorization.

351980999989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 510183360, while the sum is 79.

The spelling of 351980999989 in words is "three hundred fifty-one billion, nine hundred eighty million, nine hundred ninety-nine thousand, nine hundred eighty-nine".