20400123413039 has 2 divisors, whose sum is σ = 20400123413040. Its totient is φ = 20400123413038.

The previous prime is 20400123413027. The next prime is 20400123413051. The reversal of 20400123413039 is 93031432100402.

It is a balanced prime because it is at equal distance from previous prime (20400123413027) and next prime (20400123413051).

It is a cyclic number.

It is not a de Polignac number, because 20400123413039 - 2¹⁶ = 20400123347503 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20400123412996 and 20400123413014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20400123413099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10200061706519 + 10200061706520.

It is an arithmetic number, because the mean of its divisors is an integer number (10200061706520).

Almost surely, 2^{20400123413039} is an apocalyptic number.

20400123413039 is a deficient number, since it is larger than the sum of its proper divisors (1).

20400123413039 is an equidigital number, since it uses as much as digits as its factorization.

20400123413039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 32.

The spelling of 20400123413039 in words is "twenty trillion, four hundred billion, one hundred twenty-three million, four hundred thirteen thousand, thirty-nine".