20772006439 has 2 divisors, whose sum is σ = 20772006440. Its totient is φ = 20772006438.

The previous prime is 20772006433. The next prime is 20772006457. The reversal of 20772006439 is 93460027702.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20772006439 - 2¹⁵ = 20771973671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20772006433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10386003219 + 10386003220.

It is an arithmetic number, because the mean of its divisors is an integer number (10386003220).

Almost surely, 2^20772006439 is an apocalyptic number.

20772006439 is a deficient number, since it is larger than the sum of its proper divisors (1).

20772006439 is an equidigital number, since it uses as much as digits as its factorization.

20772006439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 127008, while the sum is 40.

The spelling of 20772006439 in words is "twenty billion, seven hundred seventy-two million, six thousand, four hundred thirty-nine".