350520989697 has 6 divisors (see below), whose sum is σ = 506308096242. Its totient is φ = 233680659792.

The previous prime is 350520989677. The next prime is 350520989723. The reversal of 350520989697 is 796989025053.

350520989697 is a `hidden beast` number, since 350 + 5 + 20 + 98 + 96 + 97 = 666.

It can be written as a sum of positive squares in only one way, i.e., 270773488881 + 79747500816 = 520359^2 + 282396^2 .

It is not a de Polignac number, because 350520989697 - 2¹⁰ = 350520988673 is a prime.

It is a super-3 number, since 3×350520989697³ (a number of 36 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (350520989677) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 19473388308 + ... + 19473388325.

It is an arithmetic number, because the mean of its divisors is an integer number (84384682707).

Almost surely, 2^350520989697 is an apocalyptic number.

It is an amenable number.

350520989697 is a deficient number, since it is larger than the sum of its proper divisors (155787106545).

350520989697 is a wasteful number, since it uses less digits than its factorization.

350520989697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38946776639 (or 38946776636 counting only the distinct ones).

The product of its (nonzero) digits is 36741600, while the sum is 63.

The spelling of 350520989697 in words is "three hundred fifty billion, five hundred twenty million, nine hundred eighty-nine thousand, six hundred ninety-seven".