3420021662613 has 24 divisors (see below), whose sum is σ = 4971690317880. Its totient is φ = 2265448037760.

The previous prime is 3420021662611. The next prime is 3420021662647. The reversal of 3420021662613 is 3162661200243.

3420021662613 is a `hidden beast` number, since 3 + 4 + 2 + 0 + 0 + 2 + 16 + 626 + 13 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 89476962129 + 3330544700484 = 299127^2 + 1824978^2 .

It is not a de Polignac number, because 3420021662613 - 2¹ = 3420021662611 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3420021662611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 990598 + ... + 2796663.

It is an arithmetic number, because the mean of its divisors is an integer number (207153763245).

Almost surely, 2^{3420021662613} is an apocalyptic number.

It is an amenable number.

3420021662613 is a deficient number, since it is larger than the sum of its proper divisors (1551668655267).

3420021662613 is a wasteful number, since it uses less digits than its factorization.

3420021662613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3787909 (or 3787906 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

Adding to 3420021662613 its reverse (3162661200243), we get a palindrome (6582682862856).

The spelling of 3420021662613 in words is "three trillion, four hundred twenty billion, twenty-one million, six hundred sixty-two thousand, six hundred thirteen".