350987522784921 has 45 divisors (see below), whose sum is σ = 576315891493573. Its totient is φ = 212718586699080.

The previous prime is 350987522784853. The next prime is 350987522784931. The reversal of 350987522784921 is 129487225789053.

The square root of 350987522784921 is 18734661.

It is a perfect power (a square), and thus also a powerful number.

350987522784921 is a `hidden beast` number, since 3 + 5 + 0 + 9 + 8 + 7 + 522 + 7 + 8 + 4 + 92 + 1 = 666.

It is not a de Polignac number, because 350987522784921 - 2¹¹ = 350987522782873 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 350987522784921.

It is not an unprimeable number, because it can be changed into a prime (350987522784931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 1854636820 + ... + 1854826058.

Almost surely, 2^{350987522784921} is an apocalyptic number.

350987522784921 is the 18734661-st square number.

350987522784921 is the 9367331-st centered octagonal number.

It is an amenable number.

350987522784921 is a deficient number, since it is larger than the sum of its proper divisors (225328368708652).

350987522784921 is an frugal number, since it uses more digits than its factorization.

350987522784921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378512 (or 189253 counting only the distinct ones).

The product of its (nonzero) digits is 609638400, while the sum is 72.

The spelling of 350987522784921 in words is "three hundred fifty trillion, nine hundred eighty-seven billion, five hundred twenty-two million, seven hundred eighty-four thousand, nine hundred twenty-one".