351804718057 has 16 divisors (see below), whose sum is σ = 389431194768. Its totient is φ = 315795916800.

The previous prime is 351804718037. The next prime is 351804718073. The reversal of 351804718057 is 750817408153.

It can be written as a sum of positive squares in 8 ways, for example, as 1037548521 + 350767169536 = 32211^2 + 592256^2 .

It is a de Polignac number, because none of the positive numbers 2^k-351804718057 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 351804718057.

It is not an unprimeable number, because it can be changed into a prime (351804718037) 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 in 15 ways as a sum of consecutive naturals, for example, 2181444 + ... + 2337157.

It is an arithmetic number, because the mean of its divisors is an integer number (24339449673).

Almost surely, 2^351804718057 is an apocalyptic number.

It is an amenable number.

351804718057 is a deficient number, since it is larger than the sum of its proper divisors (37626476711).

351804718057 is a wasteful number, since it uses less digits than its factorization.

351804718057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4518780.

The product of its (nonzero) digits is 940800, while the sum is 49.

The spelling of 351804718057 in words is "three hundred fifty-one billion, eight hundred four million, seven hundred eighteen thousand, fifty-seven".