16401033139 has 2 divisors, whose sum is σ = 16401033140. Its totient is φ = 16401033138.

The previous prime is 16401033137. The next prime is 16401033193. The reversal of 16401033139 is 93133010461.

Together with next prime (16401033193) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16401033139 - 2¹ = 16401033137 is a prime.

It is a super-3 number, since 3×16401033139³ (a number of 32 digits) contains 333 as substring.

Together with 16401033137, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 16401033139.

It is not a weakly prime, because it can be changed into another prime (16401033137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8200516569 + 8200516570.

It is an arithmetic number, because the mean of its divisors is an integer number (8200516570).

Almost surely, 2^16401033139 is an apocalyptic number.

16401033139 is a deficient number, since it is larger than the sum of its proper divisors (1).

16401033139 is an equidigital number, since it uses as much as digits as its factorization.

16401033139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 31.

The spelling of 16401033139 in words is "sixteen billion, four hundred one million, thirty-three thousand, one hundred thirty-nine".