20110840039 has 2 divisors, whose sum is σ = 20110840040. Its totient is φ = 20110840038.

The previous prime is 20110840033. The next prime is 20110840049. The reversal of 20110840039 is 93004801102.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20110840039 - 2¹⁹ = 20110315751 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20110839989 and 20110840016.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20110840033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10055420019 + 10055420020.

It is an arithmetic number, because the mean of its divisors is an integer number (10055420020).

Almost surely, 2^20110840039 is an apocalyptic number.

20110840039 is a deficient number, since it is larger than the sum of its proper divisors (1).

20110840039 is an equidigital number, since it uses as much as digits as its factorization.

20110840039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 28.

The spelling of 20110840039 in words is "twenty billion, one hundred ten million, eight hundred forty thousand, thirty-nine".