351889919947 has 2 divisors, whose sum is σ = 351889919948. Its totient is φ = 351889919946.

The previous prime is 351889919939. The next prime is 351889920007. The reversal of 351889919947 is 749919988153.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 351889919947 - 2³ = 351889919939 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 351889919947.

It is not a weakly prime, because it can be changed into another prime (351889914947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 175944959973 + 175944959974.

It is an arithmetic number, because the mean of its divisors is an integer number (175944959974).

Almost surely, 2^351889919947 is an apocalyptic number.

351889919947 is a deficient number, since it is larger than the sum of its proper divisors (1).

351889919947 is an equidigital number, since it uses as much as digits as its factorization.

351889919947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 176359680, while the sum is 73.

The spelling of 351889919947 in words is "three hundred fifty-one billion, eight hundred eighty-nine million, nine hundred nineteen thousand, nine hundred forty-seven".