351356747656 has 16 divisors (see below), whose sum is σ = 661527490140. Its totient is φ = 174949416960.

The previous prime is 351356747617. The next prime is 351356747689. The reversal of 351356747656 is 656747653153.

It can be written as a sum of positive squares in 2 ways, for example, as 350068655556 + 1288092100 = 591666^2 + 35890^2 .

It is a super-2 number, since 2×351356747656² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 351356747656.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 91117561 + ... + 91121416.

Almost surely, 2^351356747656 is an apocalyptic number.

It is an amenable number.

351356747656 is a deficient number, since it is larger than the sum of its proper divisors (310170742484).

351356747656 is a wasteful number, since it uses less digits than its factorization.

351356747656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182239224 (or 182239220 counting only the distinct ones).

The product of its digits is 47628000, while the sum is 58.

The spelling of 351356747656 in words is "three hundred fifty-one billion, three hundred fifty-six million, seven hundred forty-seven thousand, six hundred fifty-six".