351123641065 has 12 divisors (see below), whose sum is σ = 444691771524. Its totient is φ = 266114758176.

The previous prime is 351123641023. The next prime is 351123641101. The reversal of 351123641065 is 560146321153.

It can be written as a sum of positive squares in 2 ways, for example, as 131255493264 + 219868147801 = 362292^2 + 468901^2 .

It is not a de Polignac number, because 351123641065 - 2¹¹ = 351123639017 is a prime.

It is a super-2 number, since 2×351123641065² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 97262362 + ... + 97265971.

It is an arithmetic number, because the mean of its divisors is an integer number (37057647627).

Almost surely, 2^351123641065 is an apocalyptic number.

It is an amenable number.

351123641065 is a deficient number, since it is larger than the sum of its proper divisors (93568130459).

351123641065 is a wasteful number, since it uses less digits than its factorization.

351123641065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194528376 (or 194528357 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 37.

The spelling of 351123641065 in words is "three hundred fifty-one billion, one hundred twenty-three million, six hundred forty-one thousand, sixty-five".