20620341619 has 2 divisors, whose sum is σ = 20620341620. Its totient is φ = 20620341618.

The previous prime is 20620341617. The next prime is 20620341659. The reversal of 20620341619 is 91614302602.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20620341619 - 2¹ = 20620341617 is a prime.

It is a super-2 number, since 2×20620341619² (a number of 21 digits) contains 22 as substring.

Together with 20620341617, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20620341617) 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 as a sum of consecutive naturals, namely, 10310170809 + 10310170810.

It is an arithmetic number, because the mean of its divisors is an integer number (10310170810).

Almost surely, 2^20620341619 is an apocalyptic number.

20620341619 is a deficient number, since it is larger than the sum of its proper divisors (1).

20620341619 is an equidigital number, since it uses as much as digits as its factorization.

20620341619 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 34.

The spelling of 20620341619 in words is "twenty billion, six hundred twenty million, three hundred forty-one thousand, six hundred nineteen".