20415516442339 has 2 divisors, whose sum is σ = 20415516442340. Its totient is φ = 20415516442338.

The previous prime is 20415516442291. The next prime is 20415516442369. The reversal of 20415516442339 is 93324461551402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20415516442339 - 2³⁹ = 19865760628451 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20415516442292 and 20415516442301.

It is not a weakly prime, because it can be changed into another prime (20415516442369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10207758221169 + 10207758221170.

It is an arithmetic number, because the mean of its divisors is an integer number (10207758221170).

Almost surely, 2^{20415516442339} is an apocalyptic number.

20415516442339 is a deficient number, since it is larger than the sum of its proper divisors (1).

20415516442339 is an equidigital number, since it uses as much as digits as its factorization.

20415516442339 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3110400, while the sum is 49.

The spelling of 20415516442339 in words is "twenty trillion, four hundred fifteen billion, five hundred sixteen million, four hundred forty-two thousand, three hundred thirty-nine".