13555120939 has 2 divisors, whose sum is σ = 13555120940. Its totient is φ = 13555120938.

The previous prime is 13555120933. The next prime is 13555120973. The reversal of 13555120939 is 93902155531.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13555120939 - 2⁵ = 13555120907 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13555120895 and 13555120904.

It is not a weakly prime, because it can be changed into another prime (13555120933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6777560469 + 6777560470.

It is an arithmetic number, because the mean of its divisors is an integer number (6777560470).

Almost surely, 2^13555120939 is an apocalyptic number.

13555120939 is a deficient number, since it is larger than the sum of its proper divisors (1).

13555120939 is an equidigital number, since it uses as much as digits as its factorization.

13555120939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 182250, while the sum is 43.

The spelling of 13555120939 in words is "thirteen billion, five hundred fifty-five million, one hundred twenty thousand, nine hundred thirty-nine".