3500016553421 has 4 divisors (see below), whose sum is σ = 3513635295132. Its totient is φ = 3486397811712.

The previous prime is 3500016553399. The next prime is 3500016553541. The reversal of 3500016553421 is 1243556100053.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2331466363396 + 1168550190025 = 1526914^2 + 1080995^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3500016553421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3500016753421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6809370470 + ... + 6809370983.

It is an arithmetic number, because the mean of its divisors is an integer number (878408823783).

Almost surely, 2^{3500016553421} is an apocalyptic number.

It is an amenable number.

3500016553421 is a deficient number, since it is larger than the sum of its proper divisors (13618741711).

3500016553421 is a wasteful number, since it uses less digits than its factorization.

3500016553421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13618741710.

The product of its (nonzero) digits is 54000, while the sum is 35.

The spelling of 3500016553421 in words is "three trillion, five hundred billion, sixteen million, five hundred fifty-three thousand, four hundred twenty-one".