20150223839 has 2 divisors, whose sum is σ = 20150223840. Its totient is φ = 20150223838.

The previous prime is 20150223829. The next prime is 20150223853. The reversal of 20150223839 is 93832205102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20150223839 - 2¹² = 20150219743 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20150223799 and 20150223808.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20150223829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10075111919 + 10075111920.

It is an arithmetic number, because the mean of its divisors is an integer number (10075111920).

Almost surely, 2^20150223839 is an apocalyptic number.

20150223839 is a deficient number, since it is larger than the sum of its proper divisors (1).

20150223839 is an equidigital number, since it uses as much as digits as its factorization.

20150223839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 35.

The spelling of 20150223839 in words is "twenty billion, one hundred fifty million, two hundred twenty-three thousand, eight hundred thirty-nine".