20066115439 has 2 divisors, whose sum is σ = 20066115440. Its totient is φ = 20066115438.

The previous prime is 20066115431. The next prime is 20066115467. The reversal of 20066115439 is 93451166002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20066115439 - 2³ = 20066115431 is a prime.

It is a super-2 number, since 2×20066115439² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20066115398 and 20066115407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20066115431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10033057719 + 10033057720.

It is an arithmetic number, because the mean of its divisors is an integer number (10033057720).

Almost surely, 2^20066115439 is an apocalyptic number.

20066115439 is a deficient number, since it is larger than the sum of its proper divisors (1).

20066115439 is an equidigital number, since it uses as much as digits as its factorization.

20066115439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 37.

The spelling of 20066115439 in words is "twenty billion, sixty-six million, one hundred fifteen thousand, four hundred thirty-nine".