351948289697 has 4 divisors (see below), whose sum is σ = 351950235780. Its totient is φ = 351946343616.

The previous prime is 351948289687. The next prime is 351948289699. The reversal of 351948289697 is 796982849153.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 796982849153 = 2357 ⋅338134429.

It can be written as a sum of positive squares in 2 ways, for example, as 181683947536 + 170264342161 = 426244^2 + 412631^2 .

It is a cyclic number.

It is not a de Polignac number, because 351948289697 - 2⁶ = 351948289633 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 351948289697.

It is not an unprimeable number, because it can be changed into a prime (351948289699) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 670388 + ... + 1073925.

It is an arithmetic number, because the mean of its divisors is an integer number (87987558945).

Almost surely, 2^351948289697 is an apocalyptic number.

It is an amenable number.

351948289697 is a deficient number, since it is larger than the sum of its proper divisors (1946083).

351948289697 is a wasteful number, since it uses less digits than its factorization.

351948289697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1946082.

The product of its digits is 235146240, while the sum is 71.

The spelling of 351948289697 in words is "three hundred fifty-one billion, nine hundred forty-eight million, two hundred eighty-nine thousand, six hundred ninety-seven".