20862452069 has 2 divisors, whose sum is σ = 20862452070. Its totient is φ = 20862452068.

The previous prime is 20862452053. The next prime is 20862452113. The reversal of 20862452069 is 96025426802.

It is an a-pointer prime, because the next prime (20862452113) can be obtained adding 20862452069 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16550822500 + 4311629569 = 128650^2 + 65663^2 .

It is a cyclic number.

It is not a de Polignac number, because 20862452069 - 2⁴ = 20862452053 is a prime.

It is a super-2 number, since 2×20862452069² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20862452869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10431226034 + 10431226035.

It is an arithmetic number, because the mean of its divisors is an integer number (10431226035).

Almost surely, 2^20862452069 is an apocalyptic number.

It is an amenable number.

20862452069 is a deficient number, since it is larger than the sum of its proper divisors (1).

20862452069 is an equidigital number, since it uses as much as digits as its factorization.

20862452069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 414720, while the sum is 44.

The spelling of 20862452069 in words is "twenty billion, eight hundred sixty-two million, four hundred fifty-two thousand, sixty-nine".