351813117512 has 8 divisors (see below), whose sum is σ = 659649595350. Its totient is φ = 175906558752.

The previous prime is 351813117499. The next prime is 351813117521. The reversal of 351813117512 is 215711318153.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 324938761156 + 26874356356 = 570034^2 + 163934^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 21988319837 + ... + 21988319852.

Almost surely, 2^351813117512 is an apocalyptic number.

It is an amenable number.

351813117512 is a deficient number, since it is larger than the sum of its proper divisors (307836477838).

351813117512 is a wasteful number, since it uses less digits than its factorization.

351813117512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43976639695 (or 43976639691 counting only the distinct ones).

The product of its digits is 25200, while the sum is 38.

The spelling of 351813117512 in words is "three hundred fifty-one billion, eight hundred thirteen million, one hundred seventeen thousand, five hundred twelve".