20614455109 has 2 divisors, whose sum is σ = 20614455110. Its totient is φ = 20614455108.

The previous prime is 20614455097. The next prime is 20614455151. The reversal of 20614455109 is 90155441602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19810562500 + 803892609 = 140750^2 + 28353^2 .

It is a cyclic number.

It is not a de Polignac number, because 20614455109 - 2³¹ = 18466971461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20614455179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10307227554 + 10307227555.

It is an arithmetic number, because the mean of its divisors is an integer number (10307227555).

Almost surely, 2^20614455109 is an apocalyptic number.

It is an amenable number.

20614455109 is a deficient number, since it is larger than the sum of its proper divisors (1).

20614455109 is an equidigital number, since it uses as much as digits as its factorization.

20614455109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43200, while the sum is 37.

The spelling of 20614455109 in words is "twenty billion, six hundred fourteen million, four hundred fifty-five thousand, one hundred nine".