20413155343213 has 2 divisors, whose sum is σ = 20413155343214. Its totient is φ = 20413155343212.

The previous prime is 20413155343193. The next prime is 20413155343237. The reversal of 20413155343213 is 31234355131402.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16219088907849 + 4194066435364 = 4027293^2 + 2047942^2 .

It is a cyclic number.

It is not a de Polignac number, because 20413155343213 - 2²¹ = 20413153246061 is a prime.

It is a super-2 number, since 2×20413155343213² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20413155343283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10206577671606 + 10206577671607.

It is an arithmetic number, because the mean of its divisors is an integer number (10206577671607).

Almost surely, 2^{20413155343213} is an apocalyptic number.

It is an amenable number.

20413155343213 is a deficient number, since it is larger than the sum of its proper divisors (1).

20413155343213 is an equidigital number, since it uses as much as digits as its factorization.

20413155343213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129600, while the sum is 37.

The spelling of 20413155343213 in words is "twenty trillion, four hundred thirteen billion, one hundred fifty-five million, three hundred forty-three thousand, two hundred thirteen".